Whakaoti i te 2(-2/5)div(-3/10)^-1

$$2 ( \frac { - 2 } { 5 } ) \div ( \frac { - 3 } { 10 } ) ^ { - 1 }$$

Aromātai

$$\frac{6}{25}=0.24$$

Ngā Upane Otinga

Ka taea te hautanga \frac{-2}{5} te tuhi anō ko -\frac{2}{5} mā te tango i te tohu tōraro.

$$\frac{2\left(-\frac{2}{5}\right)}{\left(\frac{-3}{10}\right)^{-1}}$$

Whakareatia te 2 ki te -\frac{2}{5}, ka -\frac{4}{5}.

$$\frac{-\frac{4}{5}}{\left(\frac{-3}{10}\right)^{-1}}$$

Ka taea te hautanga \frac{-3}{10} te tuhi anō ko -\frac{3}{10} mā te tango i te tohu tōraro.

$$\frac{-\frac{4}{5}}{\left(-\frac{3}{10}\right)^{-1}}$$

Tātaihia te -\frac{3}{10} mā te pū o -1, kia riro ko -\frac{10}{3}.

$$\frac{-\frac{4}{5}}{-\frac{10}{3}}$$

Whakawehe -\frac{4}{5} ki te -\frac{10}{3} mā te whakarea -\frac{4}{5} ki te tau huripoki o -\frac{10}{3}.

$$-\frac{4}{5}\left(-\frac{3}{10}\right)$$

Whakareatia te -\frac{4}{5} ki te -\frac{3}{10}, ka \frac{6}{25}.

$$\frac{6}{25}$$

Tauwehe

$$\frac{2 \cdot 3}{5 ^ {2}} = 0.24$$