Whakaoti i te 11/2-34/5

$$1 \frac{ 1 }{ 2 } -3 \frac{ 4 }{ 5 }$$

Aromātai

$$-\frac{23}{10}=-2.3$$

Ngā Upane Otinga

Whakareatia te 1 ki te 2, ka 2.

$$\frac{2+1}{2}-\frac{3\times 5+4}{5}$$

Tāpirihia te 2 ki te 1, ka 3.

$$\frac{3}{2}-\frac{3\times 5+4}{5}$$

Whakareatia te 3 ki te 5, ka 15.

$$\frac{3}{2}-\frac{15+4}{5}$$

Tāpirihia te 15 ki te 4, ka 19.

$$\frac{3}{2}-\frac{19}{5}$$

Ko te maha noa iti rawa atu o 2 me 5 ko 10. Me tahuri \frac{3}{2} me \frac{19}{5} ki te hautau me te tautūnga 10.

$$\frac{15}{10}-\frac{38}{10}$$

Tā te mea he rite te tauraro o \frac{15}{10} me \frac{38}{10}, me tango rāua mā te tango i ō raua taurunga.

$$\frac{15-38}{10}$$

Tangohia te 38 i te 15, ka -23.

$$-\frac{23}{10}$$

Tauwehe

$$-\frac{23}{10} = -2\frac{3}{10} = -2.3$$