Whakaoti i te 15/7*21/2=

$$1 \frac { 5 } { 7 } \times 2 \frac { 1 } { 2 } =$$

Aromātai

$$\frac{30}{7}\approx 4.285714286$$

Ngā Upane Otinga

Whakareatia te 1 ki te 7, ka 7.

$$\frac{7+5}{7}\times \frac{2\times 2+1}{2}$$

Tāpirihia te 7 ki te 5, ka 12.

$$\frac{12}{7}\times \frac{2\times 2+1}{2}$$

Whakareatia te 2 ki te 2, ka 4.

$$\frac{12}{7}\times \frac{4+1}{2}$$

Tāpirihia te 4 ki te 1, ka 5.

$$\frac{12}{7}\times \frac{5}{2}$$

Me whakarea te \frac{12}{7} ki te \frac{5}{2} mā te whakarea taurunga ki te taurunga me te tauraro ki te tauraro.

$$\frac{12\times 5}{7\times 2}$$

Mahia ngā whakarea i roto i te hautanga \frac{12\times 5}{7\times 2}.

$$\frac{60}{14}$$

Whakahekea te hautanga \frac{60}{14} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 2.

$$\frac{30}{7}$$

Tauwehe

$$\frac{2 \cdot 3 \cdot 5}{7} = 4\frac{2}{7} = 4.285714285714286$$