Lutasin ang 12.3-17.3+5.9-9.2+18.9-24.9+14.5-18.3+22.7-5.9+10.3-23.1+16.8-4.7+3.9-12.6+21.5-26.8+13.2-2.7+18.3-7.7+19.2-11.6+2.9-15.9+7.3-24.1+19.6-15.5+17.2-14.2+19.4-18.7+4.7-11.6+14.8-23.2+21.9-14.1+19.2-9.8+6.7-1.9+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6

$$12.3-17.3+5.9-9.2+18.9-24.9+14.5-18.3+22.7-5.9+10.3-23.1+16.8-4.7+3.9-12.6+21.5-26.8+13.2-2.7+18.3-7.7+19.2-11.6+2.9-15.9+7.3-24.1+19.6-15.5+17.2-14.2+19.4-18.7+4.7-11.6+14.8-23.2+21.9-14.1+19.2-9.8+6.7-1.9+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

I-evaluate

$$29.9$$

Mga Hakbang ng Solution

I-subtract ang 17.3 mula sa 12.3 para makuha ang -5.

$$-5+5.9-9.2+18.9-24.9+14.5-18.3+22.7-5.9+10.3-23.1+16.8-4.7+3.9-12.6+21.5-26.8+13.2-2.7+18.3-7.7+19.2-11.6+2.9-15.9+7.3-24.1+19.6-15.5+17.2-14.2+19.4-18.7+4.7-11.6+14.8-23.2+21.9-14.1+19.2-9.8+6.7-1.9+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

Idagdag ang -5 at 5.9 para makuha ang 0.9.

$$0.9-9.2+18.9-24.9+14.5-18.3+22.7-5.9+10.3-23.1+16.8-4.7+3.9-12.6+21.5-26.8+13.2-2.7+18.3-7.7+19.2-11.6+2.9-15.9+7.3-24.1+19.6-15.5+17.2-14.2+19.4-18.7+4.7-11.6+14.8-23.2+21.9-14.1+19.2-9.8+6.7-1.9+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

I-subtract ang 9.2 mula sa 0.9 para makuha ang -8.3.

$$-8.3+18.9-24.9+14.5-18.3+22.7-5.9+10.3-23.1+16.8-4.7+3.9-12.6+21.5-26.8+13.2-2.7+18.3-7.7+19.2-11.6+2.9-15.9+7.3-24.1+19.6-15.5+17.2-14.2+19.4-18.7+4.7-11.6+14.8-23.2+21.9-14.1+19.2-9.8+6.7-1.9+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

Idagdag ang -8.3 at 18.9 para makuha ang 10.6.

$$10.6-24.9+14.5-18.3+22.7-5.9+10.3-23.1+16.8-4.7+3.9-12.6+21.5-26.8+13.2-2.7+18.3-7.7+19.2-11.6+2.9-15.9+7.3-24.1+19.6-15.5+17.2-14.2+19.4-18.7+4.7-11.6+14.8-23.2+21.9-14.1+19.2-9.8+6.7-1.9+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

I-subtract ang 24.9 mula sa 10.6 para makuha ang -14.3.

$$-14.3+14.5-18.3+22.7-5.9+10.3-23.1+16.8-4.7+3.9-12.6+21.5-26.8+13.2-2.7+18.3-7.7+19.2-11.6+2.9-15.9+7.3-24.1+19.6-15.5+17.2-14.2+19.4-18.7+4.7-11.6+14.8-23.2+21.9-14.1+19.2-9.8+6.7-1.9+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

Idagdag ang -14.3 at 14.5 para makuha ang 0.2.

$$0.2-18.3+22.7-5.9+10.3-23.1+16.8-4.7+3.9-12.6+21.5-26.8+13.2-2.7+18.3-7.7+19.2-11.6+2.9-15.9+7.3-24.1+19.6-15.5+17.2-14.2+19.4-18.7+4.7-11.6+14.8-23.2+21.9-14.1+19.2-9.8+6.7-1.9+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

I-subtract ang 18.3 mula sa 0.2 para makuha ang -18.1.

$$-18.1+22.7-5.9+10.3-23.1+16.8-4.7+3.9-12.6+21.5-26.8+13.2-2.7+18.3-7.7+19.2-11.6+2.9-15.9+7.3-24.1+19.6-15.5+17.2-14.2+19.4-18.7+4.7-11.6+14.8-23.2+21.9-14.1+19.2-9.8+6.7-1.9+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

Idagdag ang -18.1 at 22.7 para makuha ang 4.6.

$$4.6-5.9+10.3-23.1+16.8-4.7+3.9-12.6+21.5-26.8+13.2-2.7+18.3-7.7+19.2-11.6+2.9-15.9+7.3-24.1+19.6-15.5+17.2-14.2+19.4-18.7+4.7-11.6+14.8-23.2+21.9-14.1+19.2-9.8+6.7-1.9+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

I-subtract ang 5.9 mula sa 4.6 para makuha ang -1.3.

$$-1.3+10.3-23.1+16.8-4.7+3.9-12.6+21.5-26.8+13.2-2.7+18.3-7.7+19.2-11.6+2.9-15.9+7.3-24.1+19.6-15.5+17.2-14.2+19.4-18.7+4.7-11.6+14.8-23.2+21.9-14.1+19.2-9.8+6.7-1.9+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

Idagdag ang -1.3 at 10.3 para makuha ang 9.

$$9-23.1+16.8-4.7+3.9-12.6+21.5-26.8+13.2-2.7+18.3-7.7+19.2-11.6+2.9-15.9+7.3-24.1+19.6-15.5+17.2-14.2+19.4-18.7+4.7-11.6+14.8-23.2+21.9-14.1+19.2-9.8+6.7-1.9+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

I-subtract ang 23.1 mula sa 9 para makuha ang -14.1.

$$-14.1+16.8-4.7+3.9-12.6+21.5-26.8+13.2-2.7+18.3-7.7+19.2-11.6+2.9-15.9+7.3-24.1+19.6-15.5+17.2-14.2+19.4-18.7+4.7-11.6+14.8-23.2+21.9-14.1+19.2-9.8+6.7-1.9+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

Idagdag ang -14.1 at 16.8 para makuha ang 2.7.

$$2.7-4.7+3.9-12.6+21.5-26.8+13.2-2.7+18.3-7.7+19.2-11.6+2.9-15.9+7.3-24.1+19.6-15.5+17.2-14.2+19.4-18.7+4.7-11.6+14.8-23.2+21.9-14.1+19.2-9.8+6.7-1.9+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

I-subtract ang 4.7 mula sa 2.7 para makuha ang -2.

$$-2+3.9-12.6+21.5-26.8+13.2-2.7+18.3-7.7+19.2-11.6+2.9-15.9+7.3-24.1+19.6-15.5+17.2-14.2+19.4-18.7+4.7-11.6+14.8-23.2+21.9-14.1+19.2-9.8+6.7-1.9+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

Idagdag ang -2 at 3.9 para makuha ang 1.9.

$$1.9-12.6+21.5-26.8+13.2-2.7+18.3-7.7+19.2-11.6+2.9-15.9+7.3-24.1+19.6-15.5+17.2-14.2+19.4-18.7+4.7-11.6+14.8-23.2+21.9-14.1+19.2-9.8+6.7-1.9+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

I-subtract ang 12.6 mula sa 1.9 para makuha ang -10.7.

$$-10.7+21.5-26.8+13.2-2.7+18.3-7.7+19.2-11.6+2.9-15.9+7.3-24.1+19.6-15.5+17.2-14.2+19.4-18.7+4.7-11.6+14.8-23.2+21.9-14.1+19.2-9.8+6.7-1.9+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

Idagdag ang -10.7 at 21.5 para makuha ang 10.8.

$$10.8-26.8+13.2-2.7+18.3-7.7+19.2-11.6+2.9-15.9+7.3-24.1+19.6-15.5+17.2-14.2+19.4-18.7+4.7-11.6+14.8-23.2+21.9-14.1+19.2-9.8+6.7-1.9+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

I-subtract ang 26.8 mula sa 10.8 para makuha ang -16.

$$-16+13.2-2.7+18.3-7.7+19.2-11.6+2.9-15.9+7.3-24.1+19.6-15.5+17.2-14.2+19.4-18.7+4.7-11.6+14.8-23.2+21.9-14.1+19.2-9.8+6.7-1.9+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

Idagdag ang -16 at 13.2 para makuha ang -2.8.

$$-2.8-2.7+18.3-7.7+19.2-11.6+2.9-15.9+7.3-24.1+19.6-15.5+17.2-14.2+19.4-18.7+4.7-11.6+14.8-23.2+21.9-14.1+19.2-9.8+6.7-1.9+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

I-subtract ang 2.7 mula sa -2.8 para makuha ang -5.5.

$$-5.5+18.3-7.7+19.2-11.6+2.9-15.9+7.3-24.1+19.6-15.5+17.2-14.2+19.4-18.7+4.7-11.6+14.8-23.2+21.9-14.1+19.2-9.8+6.7-1.9+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

Idagdag ang -5.5 at 18.3 para makuha ang 12.8.

$$12.8-7.7+19.2-11.6+2.9-15.9+7.3-24.1+19.6-15.5+17.2-14.2+19.4-18.7+4.7-11.6+14.8-23.2+21.9-14.1+19.2-9.8+6.7-1.9+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

I-subtract ang 7.7 mula sa 12.8 para makuha ang 5.1.

$$5.1+19.2-11.6+2.9-15.9+7.3-24.1+19.6-15.5+17.2-14.2+19.4-18.7+4.7-11.6+14.8-23.2+21.9-14.1+19.2-9.8+6.7-1.9+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

Idagdag ang 5.1 at 19.2 para makuha ang 24.3.

$$24.3-11.6+2.9-15.9+7.3-24.1+19.6-15.5+17.2-14.2+19.4-18.7+4.7-11.6+14.8-23.2+21.9-14.1+19.2-9.8+6.7-1.9+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

I-subtract ang 11.6 mula sa 24.3 para makuha ang 12.7.

$$12.7+2.9-15.9+7.3-24.1+19.6-15.5+17.2-14.2+19.4-18.7+4.7-11.6+14.8-23.2+21.9-14.1+19.2-9.8+6.7-1.9+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

Idagdag ang 12.7 at 2.9 para makuha ang 15.6.

$$15.6-15.9+7.3-24.1+19.6-15.5+17.2-14.2+19.4-18.7+4.7-11.6+14.8-23.2+21.9-14.1+19.2-9.8+6.7-1.9+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

I-subtract ang 15.9 mula sa 15.6 para makuha ang -0.3.

$$-0.3+7.3-24.1+19.6-15.5+17.2-14.2+19.4-18.7+4.7-11.6+14.8-23.2+21.9-14.1+19.2-9.8+6.7-1.9+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

Idagdag ang -0.3 at 7.3 para makuha ang 7.

$$7-24.1+19.6-15.5+17.2-14.2+19.4-18.7+4.7-11.6+14.8-23.2+21.9-14.1+19.2-9.8+6.7-1.9+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

I-subtract ang 24.1 mula sa 7 para makuha ang -17.1.

$$-17.1+19.6-15.5+17.2-14.2+19.4-18.7+4.7-11.6+14.8-23.2+21.9-14.1+19.2-9.8+6.7-1.9+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

Idagdag ang -17.1 at 19.6 para makuha ang 2.5.

$$2.5-15.5+17.2-14.2+19.4-18.7+4.7-11.6+14.8-23.2+21.9-14.1+19.2-9.8+6.7-1.9+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

I-subtract ang 15.5 mula sa 2.5 para makuha ang -13.

$$-13+17.2-14.2+19.4-18.7+4.7-11.6+14.8-23.2+21.9-14.1+19.2-9.8+6.7-1.9+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

Idagdag ang -13 at 17.2 para makuha ang 4.2.

$$4.2-14.2+19.4-18.7+4.7-11.6+14.8-23.2+21.9-14.1+19.2-9.8+6.7-1.9+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

I-subtract ang 14.2 mula sa 4.2 para makuha ang -10.

$$-10+19.4-18.7+4.7-11.6+14.8-23.2+21.9-14.1+19.2-9.8+6.7-1.9+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

Idagdag ang -10 at 19.4 para makuha ang 9.4.

$$9.4-18.7+4.7-11.6+14.8-23.2+21.9-14.1+19.2-9.8+6.7-1.9+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

I-subtract ang 18.7 mula sa 9.4 para makuha ang -9.3.

$$-9.3+4.7-11.6+14.8-23.2+21.9-14.1+19.2-9.8+6.7-1.9+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

Idagdag ang -9.3 at 4.7 para makuha ang -4.6.

$$-4.6-11.6+14.8-23.2+21.9-14.1+19.2-9.8+6.7-1.9+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

I-subtract ang 11.6 mula sa -4.6 para makuha ang -16.2.

$$-16.2+14.8-23.2+21.9-14.1+19.2-9.8+6.7-1.9+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

Idagdag ang -16.2 at 14.8 para makuha ang -1.4.

$$-1.4-23.2+21.9-14.1+19.2-9.8+6.7-1.9+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

I-subtract ang 23.2 mula sa -1.4 para makuha ang -24.6.

$$-24.6+21.9-14.1+19.2-9.8+6.7-1.9+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

Idagdag ang -24.6 at 21.9 para makuha ang -2.7.

$$-2.7-14.1+19.2-9.8+6.7-1.9+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

I-subtract ang 14.1 mula sa -2.7 para makuha ang -16.8.

$$-16.8+19.2-9.8+6.7-1.9+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

Idagdag ang -16.8 at 19.2 para makuha ang 2.4.

$$2.4-9.8+6.7-1.9+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

I-subtract ang 9.8 mula sa 2.4 para makuha ang -7.4.

$$-7.4+6.7-1.9+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

Idagdag ang -7.4 at 6.7 para makuha ang -0.7.

$$-0.7-1.9+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

I-subtract ang 1.9 mula sa -0.7 para makuha ang -2.6.

$$-2.6+13.5-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

Idagdag ang -2.6 at 13.5 para makuha ang 10.9.

$$10.9-19.3+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

I-subtract ang 19.3 mula sa 10.9 para makuha ang -8.4.

$$-8.4+5.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

Idagdag ang -8.4 at 5.2 para makuha ang -3.2.

$$-3.2-9.1+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

I-subtract ang 9.1 mula sa -3.2 para makuha ang -12.3.

$$-12.3+25.1-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

Idagdag ang -12.3 at 25.1 para makuha ang 12.8.

$$12.8-21.6+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

I-subtract ang 21.6 mula sa 12.8 para makuha ang -8.8.

$$-8.8+13.7-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

Idagdag ang -8.8 at 13.7 para makuha ang 4.9.

$$4.9-8.3+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

I-subtract ang 8.3 mula sa 4.9 para makuha ang -3.4.

$$-3.4+3.9-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

Idagdag ang -3.4 at 3.9 para makuha ang 0.5.

$$0.5-16.8+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

I-subtract ang 16.8 mula sa 0.5 para makuha ang -16.3.

$$-16.3+12.1-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

Idagdag ang -16.3 at 12.1 para makuha ang -4.2.

$$-4.2-7.4+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

I-subtract ang 7.4 mula sa -4.2 para makuha ang -11.6.

$$-11.6+23.7-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

Idagdag ang -11.6 at 23.7 para makuha ang 12.1.

$$12.1-12.1+17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

I-subtract ang 12.1 mula sa 12.1 para makuha ang 0.

$$17.3-12.8+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

I-subtract ang 12.8 mula sa 17.3 para makuha ang 4.5.

$$4.5+19.1-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

Idagdag ang 4.5 at 19.1 para makuha ang 23.6.

$$23.6-24.6+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

I-subtract ang 24.6 mula sa 23.6 para makuha ang -1.

$$-1+26.7-16.8+13.9-5.9+9.7-12.3+15.6$$

Idagdag ang -1 at 26.7 para makuha ang 25.7.

$$25.7-16.8+13.9-5.9+9.7-12.3+15.6$$

I-subtract ang 16.8 mula sa 25.7 para makuha ang 8.9.

$$8.9+13.9-5.9+9.7-12.3+15.6$$

Idagdag ang 8.9 at 13.9 para makuha ang 22.8.

$$22.8-5.9+9.7-12.3+15.6$$

I-subtract ang 5.9 mula sa 22.8 para makuha ang 16.9.

$$16.9+9.7-12.3+15.6$$

Idagdag ang 16.9 at 9.7 para makuha ang 26.6.

$$26.6-12.3+15.6$$

I-subtract ang 12.3 mula sa 26.6 para makuha ang 14.3.

$$14.3+15.6$$

Idagdag ang 14.3 at 15.6 para makuha ang 29.9.

$$29.9$$

I-factor

$$\frac{13 \cdot 23}{2 \cdot 5} = 29\frac{9}{10} = 29.9$$