Whakaoti i te =10+[500-150/500]*2

$$= 10 + [ \frac { 500 - 150 } { 500 } ] \times 2$$

Aromātai

$$\frac{57}{5}=11.4$$

Ngā Upane Otinga

Tangohia te 150 i te 500, ka 350.

$$10+\frac{350}{500}\times 2$$

Whakahekea te hautanga \frac{350}{500} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 50.

$$10+\frac{7}{10}\times 2$$

Tuhia te \frac{7}{10}\times 2 hei hautanga kotahi.

$$10+\frac{7\times 2}{10}$$

Whakareatia te 7 ki te 2, ka 14.

$$10+\frac{14}{10}$$

Whakahekea te hautanga \frac{14}{10} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 2.

$$10+\frac{7}{5}$$

Me tahuri te 10 ki te hautau \frac{50}{5}.

$$\frac{50}{5}+\frac{7}{5}$$

Tā te mea he rite te tauraro o \frac{50}{5} me \frac{7}{5}, me tāpiri rāua mā te tāpiri i ō raua taurunga.

$$\frac{50+7}{5}$$

Tāpirihia te 50 ki te 7, ka 57.

$$\frac{57}{5}$$

Tauwehe

$$\frac{3 \cdot 19}{5} = 11\frac{2}{5} = 11.4$$