Whakaoti i te 72*21/3-372*21/3=

$$72 \cdot 2 \frac { 1 } { 3 } - 372 \cdot 2 \frac { 1 } { 3 } =$$

Aromātai

$$-700$$

Ngā Upane Otinga

Whakareatia te 2 ki te 3, ka 6.

$$72\times \frac{6+1}{3}-372\times \frac{2\times 3+1}{3}$$

Tāpirihia te 6 ki te 1, ka 7.

$$72\times \frac{7}{3}-372\times \frac{2\times 3+1}{3}$$

Tuhia te 72\times \frac{7}{3} hei hautanga kotahi.

$$\frac{72\times 7}{3}-372\times \frac{2\times 3+1}{3}$$

Whakareatia te 72 ki te 7, ka 504.

$$\frac{504}{3}-372\times \frac{2\times 3+1}{3}$$

Whakawehea te 504 ki te 3, kia riro ko 168.

$$168-372\times \frac{2\times 3+1}{3}$$

Whakareatia te 2 ki te 3, ka 6.

$$168-372\times \frac{6+1}{3}$$

Tāpirihia te 6 ki te 1, ka 7.

$$168-372\times \frac{7}{3}$$

Tuhia te 372\times \frac{7}{3} hei hautanga kotahi.

$$168-\frac{372\times 7}{3}$$

Whakareatia te 372 ki te 7, ka 2604.

$$168-\frac{2604}{3}$$

Whakawehea te 2604 ki te 3, kia riro ko 868.

$$168-868$$

Tangohia te 868 i te 168, ka -700.

$$-700$$

Tauwehe

$$-700$$