Whakaoti i te 40k+1000=1/4*400+100

$$40 k + 1000 = \frac { 1 } { 4 } \times 400 + 100$$

Whakaoti mō k

$$k=-20$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Whakareatia te \frac{1}{4} ki te 400, ka \frac{400}{4}.

$$40k+1000=\frac{400}{4}+100$$

Whakawehea te 400 ki te 4, kia riro ko 100.

$$40k+1000=100+100$$

Tāpirihia te 100 ki te 100, ka 200.

$$40k+1000=200$$

Tangohia te 1000 mai i ngā taha e rua.

$$40k=200-1000$$

Tangohia te 1000 i te 200, ka -800.

$$40k=-800$$

Whakawehea ngā taha e rua ki te 40.

$$k=\frac{-800}{40}$$

Whakawehea te -800 ki te 40, kia riro ko -20.

$$k=-20$$