Whakaoti i te -4(8-y)geq7(y-2)-y

$$- 4 ( 8 - y ) \geq 7 ( y - 2 ) - y$$

Whakaoti mō y

$$y\leq -9$$

Ngā Upane Otinga

Whakamahia te āhuatanga tohatoha hei whakarea te -4 ki te 8-y.

$$-32+4y\geq 7\left(y-2\right)-y$$

Whakamahia te āhuatanga tohatoha hei whakarea te 7 ki te y-2.

$$-32+4y\geq 7y-14-y$$

Pahekotia te 7y me -y, ka 6y.

$$-32+4y\geq 6y-14$$

Tangohia te 6y mai i ngā taha e rua.

$$-32+4y-6y\geq -14$$

Pahekotia te 4y me -6y, ka -2y.

$$-32-2y\geq -14$$

Me tāpiri te 32 ki ngā taha e rua.

$$-2y\geq -14+32$$

Tāpirihia te -14 ki te 32, ka 18.

$$-2y\geq 18$$

Whakawehea ngā taha e rua ki te -2. I te mea he tōraro a -2, ka huri te ahunga koreōrite.

$$y\leq \frac{18}{-2}$$

Whakawehea te 18 ki te -2, kia riro ko -9.

$$y\leq -9$$