Whakaoti i te 9*8-9*15*0.02/900*(1-0.15)

$$\frac { 9 \times 8 - 9 \times 15 \times 0.02 } { 900 \times ( 1 - 0.15 ) }$$

Aromātai

$$\frac{77}{850}\approx 0.090588235$$

Ngā Upane Otinga

Whakareatia te 9 ki te 8, ka 72.

$$\frac{72-9\times 15\times 0.02}{900\left(1-0.15\right)}$$

Whakareatia te 9 ki te 15, ka 135.

$$\frac{72-135\times 0.02}{900\left(1-0.15\right)}$$

Whakareatia te 135 ki te 0.02, ka 2.7.

$$\frac{72-2.7}{900\left(1-0.15\right)}$$

Tangohia te 2.7 i te 72, ka 69.3.

$$\frac{69.3}{900\left(1-0.15\right)}$$

Tangohia te 0.15 i te 1, ka 0.85.

$$\frac{69.3}{900\times 0.85}$$

Whakareatia te 900 ki te 0.85, ka 765.

$$\frac{69.3}{765}$$

Whakarohaina te \frac{69.3}{765} mā te whakarea i te taurunga me te tauraro ki te 10.

$$\frac{693}{7650}$$

Whakahekea te hautanga \frac{693}{7650} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 9.

$$\frac{77}{850}$$

Tauwehe

$$\frac{7 \cdot 11}{2 \cdot 17 \cdot 5 ^ {2}} = 0.09058823529411765$$