1) -2(2 - 5х) = 2(х - 3) - 5 2) 4х - 2(х + 7) = 2(3 - х)
-4 + 10х = 2х - 6 - 5 4х - 2х - 14 = 6 - 2х
10х - 4 = 2х - 11 2х - 14 = 6 - 2х
10х - 2х = 4 - 11 2х + 2х = 6 + 14
8х = -7 4х = 20
х = -7/8 х = 20 : 4
х = 5
1) -2(2 - 5х) = 2(х - 3) - 5 2) 4х - 2(х + 7) = 2(3 - х)
-4 + 10х = 2х - 6 - 5 4х - 2х - 14 = 6 - 2х
10х - 4 = 2х - 11 2х - 14 = 6 - 2х
10х - 2х = 4 - 11 2х + 2х = 6 + 14
8х = -7 4х = 20
х = -7/8 х = 20 : 4
х = 5