Whakaoti i te 1+20-5*7/3+7-2*12/2

$$1+20-5 \times \frac{ 7 }{ 3 } +7-2 \times \frac{ 12 }{ 2 }$$

Aromātai

$$\frac{13}{3}\approx 4.333333333$$

Ngā Upane Otinga

Tāpirihia te 1 ki te 20, ka 21.

$$21-5\times \frac{7}{3}+7-2\times \frac{12}{2}$$

Tuhia te 5\times \frac{7}{3} hei hautanga kotahi.

$$21-\frac{5\times 7}{3}+7-2\times \frac{12}{2}$$

Whakareatia te 5 ki te 7, ka 35.

$$21-\frac{35}{3}+7-2\times \frac{12}{2}$$

Me tahuri te 21 ki te hautau \frac{63}{3}.

$$\frac{63}{3}-\frac{35}{3}+7-2\times \frac{12}{2}$$

Tā te mea he rite te tauraro o \frac{63}{3} me \frac{35}{3}, me tango rāua mā te tango i ō raua taurunga.

$$\frac{63-35}{3}+7-2\times \frac{12}{2}$$

Tangohia te 35 i te 63, ka 28.

$$\frac{28}{3}+7-2\times \frac{12}{2}$$

Me tahuri te 7 ki te hautau \frac{21}{3}.

$$\frac{28}{3}+\frac{21}{3}-2\times \frac{12}{2}$$

Tā te mea he rite te tauraro o \frac{28}{3} me \frac{21}{3}, me tāpiri rāua mā te tāpiri i ō raua taurunga.

$$\frac{28+21}{3}-2\times \frac{12}{2}$$

Tāpirihia te 28 ki te 21, ka 49.

$$\frac{49}{3}-2\times \frac{12}{2}$$

Whakawehea te 12 ki te 2, kia riro ko 6.

$$\frac{49}{3}-2\times 6$$

Whakareatia te 2 ki te 6, ka 12.

$$\frac{49}{3}-12$$

Me tahuri te 12 ki te hautau \frac{36}{3}.

$$\frac{49}{3}-\frac{36}{3}$$

Tā te mea he rite te tauraro o \frac{49}{3} me \frac{36}{3}, me tango rāua mā te tango i ō raua taurunga.

$$\frac{49-36}{3}$$

Tangohia te 36 i te 49, ka 13.

$$\frac{13}{3}$$

Tauwehe

$$\frac{13}{3} = 4\frac{1}{3} = 4.333333333333333$$