Whakaoti i te 8(x+5)=-4(x-7)

$$8 ( x + 5 ) = - 4 ( x - 7 )$$

Whakaoti mō x

$$x=-1$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Whakamahia te āhuatanga tohatoha hei whakarea te 8 ki te x+5.

$$8x+40=-4\left(x-7\right)$$

Whakamahia te āhuatanga tohatoha hei whakarea te -4 ki te x-7.

$$8x+40=-4x+28$$

Me tāpiri te 4x ki ngā taha e rua.

$$8x+40+4x=28$$

Pahekotia te 8x me 4x, ka 12x.

$$12x+40=28$$

Tangohia te 40 mai i ngā taha e rua.

$$12x=28-40$$

Tangohia te 40 i te 28, ka -12.

$$12x=-12$$

Whakawehea ngā taha e rua ki te 12.

$$x=\frac{-12}{12}$$

Whakawehea te -12 ki te 12, kia riro ko -1.

$$x=-1$$