Whakaoti i te 3+y/5=-12-4y/-2

$$\frac { 3 + y } { 5 } = \frac { - 12 - 4 y } { - 2 }$$

Whakaoti mō y

$$y=-3$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Me whakarea ngā taha e rua o te whārite ki te 10, arā, te tauraro pātahi he tino iti rawa te kitea o 5,-2.

$$2\left(3+y\right)=-5\left(-12-4y\right)$$

Whakamahia te āhuatanga tohatoha hei whakarea te 2 ki te 3+y.

$$6+2y=-5\left(-12-4y\right)$$

Whakamahia te āhuatanga tohatoha hei whakarea te -5 ki te -12-4y.

$$6+2y=60+20y$$

Tangohia te 20y mai i ngā taha e rua.

$$6+2y-20y=60$$

Pahekotia te 2y me -20y, ka -18y.

$$6-18y=60$$

Tangohia te 6 mai i ngā taha e rua.

$$-18y=60-6$$

Tangohia te 6 i te 60, ka 54.

$$-18y=54$$

Whakawehea ngā taha e rua ki te -18.

$$y=\frac{54}{-18}$$

Whakawehea te 54 ki te -18, kia riro ko -3.

$$y=-3$$