Whakaoti i te 70+100-80/150-80*50

$$70+ \frac{ 100-80 }{ 150-80 } \times 50$$

Aromātai

$$\frac{590}{7}\approx 84.285714286$$

Ngā Upane Otinga

Tangohia te 80 i te 100, ka 20.

$$70+\frac{20}{150-80}\times 50$$

Tangohia te 80 i te 150, ka 70.

$$70+\frac{20}{70}\times 50$$

Whakahekea te hautanga \frac{20}{70} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 10.

$$70+\frac{2}{7}\times 50$$

Tuhia te \frac{2}{7}\times 50 hei hautanga kotahi.

$$70+\frac{2\times 50}{7}$$

Whakareatia te 2 ki te 50, ka 100.

$$70+\frac{100}{7}$$

Me tahuri te 70 ki te hautau \frac{490}{7}.

$$\frac{490}{7}+\frac{100}{7}$$

Tā te mea he rite te tauraro o \frac{490}{7} me \frac{100}{7}, me tāpiri rāua mā te tāpiri i ō raua taurunga.

$$\frac{490+100}{7}$$

Tāpirihia te 490 ki te 100, ka 590.

$$\frac{590}{7}$$

Tauwehe

$$\frac{2 \cdot 5 \cdot 59}{7} = 84\frac{2}{7} = 84.28571428571429$$