Whakaoti i te -3x-7-2(x-5)leq2(x-5.5)

$$- 3 x - 7 - 2 ( x - 5 ) \leq 2 ( x - 5.5 )$$

Whakaoti mō x

$$x\geq 2$$

Ngā Upane Otinga

Whakamahia te āhuatanga tohatoha hei whakarea te -2 ki te x-5.

$$-3x-7-2x+10\leq 2\left(x-5.5\right)$$

Pahekotia te -3x me -2x, ka -5x.

$$-5x-7+10\leq 2\left(x-5.5\right)$$

Tāpirihia te -7 ki te 10, ka 3.

$$-5x+3\leq 2\left(x-5.5\right)$$

Whakamahia te āhuatanga tohatoha hei whakarea te 2 ki te x-5.5.

$$-5x+3\leq 2x-11$$

Tangohia te 2x mai i ngā taha e rua.

$$-5x+3-2x\leq -11$$

Pahekotia te -5x me -2x, ka -7x.

$$-7x+3\leq -11$$

Tangohia te 3 mai i ngā taha e rua.

$$-7x\leq -11-3$$

Tangohia te 3 i te -11, ka -14.

$$-7x\leq -14$$

Whakawehea ngā taha e rua ki te -7. I te mea he tōraro a -7, ka huri te ahunga koreōrite.

$$x\geq \frac{-14}{-7}$$

Whakawehea te -14 ki te -7, kia riro ko 2.

$$x\geq 2$$