Whakaoti i te -frac{2sqrt{2-y}}{-2}=2-4/-2

$$- \frac { 2 \sqrt { 2 - y } } { - 2 } = \frac { 2 - 4 } { - 2 }$$

Whakaoti mō y

$$y=1$$

Ngā Upane mō te Whakaoti Whārite Pūtake

Whakareatia ngā taha e rua o te whārite ki te -2.

$$-2\sqrt{2-y}=2-4$$

Tangohia te 4 i te 2, ka -2.

$$-2\sqrt{2-y}=-2$$

Whakawehea ngā taha e rua ki te -2.

$$\sqrt{2-y}=\frac{-2}{-2}$$

Whakawehea te -2 ki te -2, kia riro ko 1.

$$\sqrt{2-y}=1$$

Pūruatia ngā taha e rua o te whārite.

$$-y+2=1$$

Me tango 2 mai i ngā taha e rua o te whārite.

$$-y+2-2=1-2$$

Mā te tango i te 2 i a ia ake anō ka toe ko te 0.

$$-y=1-2$$

Tango 2 mai i 1.

$$-y=-1$$

Whakawehea ngā taha e rua ki te -1.

$$\frac{-y}{-1}=-\frac{1}{-1}$$

Mā te whakawehe ki te -1 ka wetekia te whakareanga ki te -1.

$$y=-\frac{1}{-1}$$

Whakawehe -1 ki te -1.

$$y=1$$