Whakaoti i te (0.2x-0.5y=19

$$( 0.2 x - 0.5 y = 19$$

Whakaoti mō x

$$x=\frac{5y}{2}+95$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Me tāpiri te 0.5y ki ngā taha e rua.

$$0.2x=19+0.5y$$

He hanga arowhānui tō te whārite.

$$0.2x=\frac{y}{2}+19$$

Me whakarea ngā taha e rua ki te 5.

$$\frac{0.2x}{0.2}=\frac{\frac{y}{2}+19}{0.2}$$

Mā te whakawehe ki te 0.2 ka wetekia te whakareanga ki te 0.2.

$$x=\frac{\frac{y}{2}+19}{0.2}$$

Whakawehe 19+\frac{y}{2} ki te 0.2 mā te whakarea 19+\frac{y}{2} ki te tau huripoki o 0.2.

$$x=\frac{5y}{2}+95$$

Whakaoti mō y

$$y=\frac{2x}{5}-38$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Tangohia te 0.2x mai i ngā taha e rua.

$$-0.5y=19-0.2x$$

He hanga arowhānui tō te whārite.

$$-0.5y=-\frac{x}{5}+19$$

Me whakarea ngā taha e rua ki te -2.

$$\frac{-0.5y}{-0.5}=\frac{-\frac{x}{5}+19}{-0.5}$$

Mā te whakawehe ki te -0.5 ka wetekia te whakareanga ki te -0.5.

$$y=\frac{-\frac{x}{5}+19}{-0.5}$$

Whakawehe 19-\frac{x}{5} ki te -0.5 mā te whakarea 19-\frac{x}{5} ki te tau huripoki o -0.5.

$$y=\frac{2x}{5}-38$$