Whakaoti i te 42/3*21/4

$$4 \frac { 2 } { 3 } \times 2 \frac { 1 } { 4 }$$

Aromātai

$$\frac{21}{2}=10.5$$

Ngā Upane Otinga

Whakareatia te 4 ki te 3, ka 12.

$$\frac{12+2}{3}\times \frac{2\times 4+1}{4}$$

Tāpirihia te 12 ki te 2, ka 14.

$$\frac{14}{3}\times \frac{2\times 4+1}{4}$$

Whakareatia te 2 ki te 4, ka 8.

$$\frac{14}{3}\times \frac{8+1}{4}$$

Tāpirihia te 8 ki te 1, ka 9.

$$\frac{14}{3}\times \frac{9}{4}$$

Me whakarea te \frac{14}{3} ki te \frac{9}{4} mā te whakarea taurunga ki te taurunga me te tauraro ki te tauraro.

$$\frac{14\times 9}{3\times 4}$$

Mahia ngā whakarea i roto i te hautanga \frac{14\times 9}{3\times 4}.

$$\frac{126}{12}$$

Whakahekea te hautanga \frac{126}{12} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 6.

$$\frac{21}{2}$$

Tauwehe

$$\frac{3 \cdot 7}{2} = 10\frac{1}{2} = 10.5$$