Пошаговое объяснение:
- 4х+3=2х
2x + 4x = 3
6x = 3
x = 3 : 6
x = 0,5
6-5х=2х-1
2x + 5x = 6 + 1
7x = 7
x = 1
7-(2х+1)=10
7 - 2x - 1 = 10
6 - 2x = 10
2x = 6 - 10
2x = -4
x = -4 : 2
x = -2
(7а+1)-(6а+3)=5
7a + 1 - 6a - 3 = 5
a - 2 = 5
a = 5 + 2
a = 7
