Whakaoti i te 7(2-28+7-n/-7)=-10

$$7 ( \frac { 2 - 28 + 7 - n } { - 7 } ) = - 10$$

Whakaoti mō n

$$n=-29$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Whakawehea ngā taha e rua ki te 7.

$$\frac{2-28+7-n}{-7}=-\frac{10}{7}$$

Me whakarea ngā taha e rua ki te -7.

$$2-28+7-n=-\frac{10}{7}\left(-7\right)$$

Tangohia te 28 i te 2, ka -26.

$$-26+7-n=-\frac{10}{7}\left(-7\right)$$

Tāpirihia te -26 ki te 7, ka -19.

$$-19-n=-\frac{10}{7}\left(-7\right)$$

Tuhia te -\frac{10}{7}\left(-7\right) hei hautanga kotahi.

$$-19-n=\frac{-10\left(-7\right)}{7}$$

Whakareatia te -10 ki te -7, ka 70.

$$-19-n=\frac{70}{7}$$

Whakawehea te 70 ki te 7, kia riro ko 10.

$$-19-n=10$$

Me tāpiri te 19 ki ngā taha e rua.

$$-n=10+19$$

Tāpirihia te 10 ki te 19, ka 29.

$$-n=29$$

Me whakarea ngā taha e rua ki te -1.

$$n=-29$$