Whakaoti i te 21/2+4(1/2+1/2)+7

$$2 \frac{ 1 }{ 2 } +4( \frac{ 1 }{ 2 } + \frac{ 1 }{ 2 } )+7$$

Aromātai

$$\frac{27}{2}=13.5$$

Ngā Upane Otinga

Whakareatia te 2 ki te 2, ka 4.

$$\frac{4+1}{2}+4\left(\frac{1}{2}+\frac{1}{2}\right)+7$$

Tāpirihia te 4 ki te 1, ka 5.

$$\frac{5}{2}+4\left(\frac{1}{2}+\frac{1}{2}\right)+7$$

Tā te mea he rite te tauraro o \frac{1}{2} me \frac{1}{2}, me tāpiri rāua mā te tāpiri i ō raua taurunga.

$$\frac{5}{2}+4\times \frac{1+1}{2}+7$$

Tāpirihia te 1 ki te 1, ka 2.

$$\frac{5}{2}+4\times \frac{2}{2}+7$$

Whakawehea te 2 ki te 2, kia riro ko 1.

$$\frac{5}{2}+4\times 1+7$$

Whakareatia te 4 ki te 1, ka 4.

$$\frac{5}{2}+4+7$$

Me tahuri te 4 ki te hautau \frac{8}{2}.

$$\frac{5}{2}+\frac{8}{2}+7$$

Tā te mea he rite te tauraro o \frac{5}{2} me \frac{8}{2}, me tāpiri rāua mā te tāpiri i ō raua taurunga.

$$\frac{5+8}{2}+7$$

Tāpirihia te 5 ki te 8, ka 13.

$$\frac{13}{2}+7$$

Me tahuri te 7 ki te hautau \frac{14}{2}.

$$\frac{13}{2}+\frac{14}{2}$$

Tā te mea he rite te tauraro o \frac{13}{2} me \frac{14}{2}, me tāpiri rāua mā te tāpiri i ō raua taurunga.

$$\frac{13+14}{2}$$

Tāpirihia te 13 ki te 14, ka 27.

$$\frac{27}{2}$$

Tauwehe

$$\frac{3 ^ {3}}{2} = 13\frac{1}{2} = 13.5$$