Whakaoti i te 60+{2*[7+18div(13-8)]}-[7*3-18-2+13]

$$60 + \{ 2 \cdot [ 7 + 18 \div ( 13 - 8 ) ] \} - [ 7 \cdot 3 - 18 - 2 + 13 ]$$

Aromātai

$$\frac{336}{5}=67.2$$

Ngā Upane Otinga

Tangohia te 8 i te 13, ka 5.

$$60+2\left(7+\frac{18}{5}\right)-\left(7\times 3-18-2+13\right)$$

Me tahuri te 7 ki te hautau \frac{35}{5}.

$$60+2\left(\frac{35}{5}+\frac{18}{5}\right)-\left(7\times 3-18-2+13\right)$$

Tā te mea he rite te tauraro o \frac{35}{5} me \frac{18}{5}, me tāpiri rāua mā te tāpiri i ō raua taurunga.

$$60+2\times \frac{35+18}{5}-\left(7\times 3-18-2+13\right)$$

Tāpirihia te 35 ki te 18, ka 53.

$$60+2\times \frac{53}{5}-\left(7\times 3-18-2+13\right)$$

Tuhia te 2\times \frac{53}{5} hei hautanga kotahi.

$$60+\frac{2\times 53}{5}-\left(7\times 3-18-2+13\right)$$

Whakareatia te 2 ki te 53, ka 106.

$$60+\frac{106}{5}-\left(7\times 3-18-2+13\right)$$

Me tahuri te 60 ki te hautau \frac{300}{5}.

$$\frac{300}{5}+\frac{106}{5}-\left(7\times 3-18-2+13\right)$$

Tā te mea he rite te tauraro o \frac{300}{5} me \frac{106}{5}, me tāpiri rāua mā te tāpiri i ō raua taurunga.

$$\frac{300+106}{5}-\left(7\times 3-18-2+13\right)$$

Tāpirihia te 300 ki te 106, ka 406.

$$\frac{406}{5}-\left(7\times 3-18-2+13\right)$$

Whakareatia te 7 ki te 3, ka 21.

$$\frac{406}{5}-\left(21-18-2+13\right)$$

Tangohia te 18 i te 21, ka 3.

$$\frac{406}{5}-\left(3-2+13\right)$$

Tangohia te 2 i te 3, ka 1.

$$\frac{406}{5}-\left(1+13\right)$$

Tāpirihia te 1 ki te 13, ka 14.

$$\frac{406}{5}-14$$

Me tahuri te 14 ki te hautau \frac{70}{5}.

$$\frac{406}{5}-\frac{70}{5}$$

Tā te mea he rite te tauraro o \frac{406}{5} me \frac{70}{5}, me tango rāua mā te tango i ō raua taurunga.

$$\frac{406-70}{5}$$

Tangohia te 70 i te 406, ka 336.

$$\frac{336}{5}$$

Tauwehe

$$\frac{2 ^ {4} \cdot 3 \cdot 7}{5} = 67\frac{1}{5} = 67.2$$