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

$$1 + 20 - 5 \times 7 / 3 + 7 - 2 \times 12 \cdot 2 : 2$$

Aromātai

$$-\frac{23}{3}\approx -7.666666667$$

Ngā Upane Otinga

Tāpirihia te 1 ki te 20, ka 21.

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

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

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

Whakareatia te 5 ki te 7, ka 35.

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

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

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

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.

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

Tangohia te 35 i te 63, ka 28.

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

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

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

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.

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

Tāpirihia te 28 ki te 21, ka 49.

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

Me whakakore te 2 me te 2.

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

Whakareatia te 12 ki te 2, ka 24.

$$\frac{49}{3}-24$$

Me tahuri te 24 ki te hautau \frac{72}{3}.

$$\frac{49}{3}-\frac{72}{3}$$

Tā te mea he rite te tauraro o \frac{49}{3} me \frac{72}{3}, me tango rāua mā te tango i ō raua taurunga.

$$\frac{49-72}{3}$$

Tangohia te 72 i te 49, ka -23.

$$-\frac{23}{3}$$

Tauwehe

$$-\frac{23}{3} = -7\frac{2}{3} = -7.666666666666667$$