Whakaoti i te 15/7*2.8div(1.5-0.3)

$$1 \frac { 5 } { 7 } \times 2.8 \div ( 1.5 - 0.3 )$$

Aromātai

$$4$$

Ngā Upane Otinga

Whakareatia te 1 ki te 7, ka 7.

$$\frac{\frac{7+5}{7}\times 2.8}{1.5-0.3}$$

Tāpirihia te 7 ki te 5, ka 12.

$$\frac{\frac{12}{7}\times 2.8}{1.5-0.3}$$

Me tahuri ki tau ā-ira 2.8 ki te hautau \frac{28}{10}. Whakahekea te hautanga \frac{28}{10} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 2.

$$\frac{\frac{12}{7}\times \frac{14}{5}}{1.5-0.3}$$

Me whakarea te \frac{12}{7} ki te \frac{14}{5} mā te whakarea taurunga ki te taurunga me te tauraro ki te tauraro.

$$\frac{\frac{12\times 14}{7\times 5}}{1.5-0.3}$$

Mahia ngā whakarea i roto i te hautanga \frac{12\times 14}{7\times 5}.

$$\frac{\frac{168}{35}}{1.5-0.3}$$

Whakahekea te hautanga \frac{168}{35} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 7.

$$\frac{\frac{24}{5}}{1.5-0.3}$$

Tangohia te 0.3 i te 1.5, ka 1.2.

$$\frac{\frac{24}{5}}{1.2}$$

Tuhia te \frac{\frac{24}{5}}{1.2} hei hautanga kotahi.

$$\frac{24}{5\times 1.2}$$

Whakareatia te 5 ki te 1.2, ka 6.

$$\frac{24}{6}$$

Whakawehea te 24 ki te 6, kia riro ko 4.

$$4$$

Tauwehe

$$2^{2}$$