Пошаговое объяснение:
7x + 8 = -5x - 6
7x + 5x = -6 - 8
12x = -14
x = -14 : 12
x = -1 2/12
x = -1 1/6
13x - 7 = 8x + 3
13x - 8x = 3 + 7
5x = 10
x = 10 : 5
x = 2
-8 - 6x = -4 - 4x
6x - 4x = -8 + 4
2x = -4
x = -4 : 2
x = -2
-9 + 4x = 6 + 3x
4x - 3x = 6 + 9
x = 15
5 -(7x - 8) = -1
5 - 7x + 8 = -1
13 - 7x = -1
7x = 13 + 1
7x = 14
x = 14 : 7
x = 2
5*(2x - 3) = -2x + 7
10x - 15 = -2x + 7
10x + 2x = 7 + 15
12x = 22
x = 22 : 12
x = 1 10/12
x = 1 5/6
