Question

Пожалуйста помогите решить уравнения.

Answer 1

8+4х-8=-10-х, 5х=-10, х=-2

10-4х-х-1=-6, 10-1+6=5х, х=15/5=3

3-7х=-5х-15, 18=2х, х=9

Answer 2

▪1.
$8 + 4(x - 2) = - 10 - x \\ 8 + 4x - 8 + x = - 10 \\ 5x = - 10 \: \: \: \: \: | \div 5 \\ x = - 2$
▪2.
$2(5 - 2x) - (x + 1) = - 6 \\ 10 - 4x - x - 1 = - 6 \\ - 5x = - 6 - 9 \\ - 5x = - 15 \: \: \: \: \: | \div ( - 5) \\ x = 3$
▪3.
$3 - 7x = -5(x + 3) \\ - 7x = -5x - 15 - 3 \\ - 7x + 5x = -18 \\ - 2x = -18 \: \: \: \: \: \: | \div ( - 2) \\ x = 9$