4х – 2,55 = -2х + 1, 05; 8х – 5(2х + 1) = 2х + 4.

Question

4х – 2,55 = -2х + 1, 05; 8х – 5(2х + 1) = 2х + 4.

Answer 1

1) -2х-4х=-2,55-1,05

-6х=-3,6

х=0,6

2) 8х-10х-5=2х+4

-2х-5=2х+4

2х-(-2х)=-5-4

4х=-9

х=-2,25