Whakaoti i te 1/8+2(9/7)div15/3

$$\frac{ 1 }{ 8 } + 2 ( \frac{ 9 }{ 7 } ) \div \frac{15}{3}$$

Aromātai

$$\frac{179}{280}\approx 0.639285714$$

Ngā Upane Otinga

Tuhia te 2\times \frac{9}{7} hei hautanga kotahi.

$$\frac{1}{8}+\frac{\frac{2\times 9}{7}}{\frac{15}{3}}$$

Whakareatia te 2 ki te 9, ka 18.

$$\frac{1}{8}+\frac{\frac{18}{7}}{\frac{15}{3}}$$

Whakawehea te 15 ki te 3, kia riro ko 5.

$$\frac{1}{8}+\frac{\frac{18}{7}}{5}$$

Tuhia te \frac{\frac{18}{7}}{5} hei hautanga kotahi.

$$\frac{1}{8}+\frac{18}{7\times 5}$$

Whakareatia te 7 ki te 5, ka 35.

$$\frac{1}{8}+\frac{18}{35}$$

Ko te maha noa iti rawa atu o 8 me 35 ko 280. Me tahuri \frac{1}{8} me \frac{18}{35} ki te hautau me te tautūnga 280.

$$\frac{35}{280}+\frac{144}{280}$$

Tā te mea he rite te tauraro o \frac{35}{280} me \frac{144}{280}, me tāpiri rāua mā te tāpiri i ō raua taurunga.

$$\frac{35+144}{280}$$

Tāpirihia te 35 ki te 144, ka 179.

$$\frac{179}{280}$$

Tauwehe

$$\frac{179}{2 ^ {3} \cdot 5 \cdot 7} = 0.6392857142857142$$