2x = 8
x = 8 : 2
x = 4
6x - 5x = 10
x = 10
4x + 7 = 15
4x = 15 - 7
4x = 8
x = 8 : 4
x = 2
9x - 5 = 3x + 7
9x - 3x = 7 + 5
6x = 12
x = 12 : 6
5x + 3 = -3x + 19
5x + 3x = 19 - 3
8x = 16
x = 16 : 8
2x = 8
x = 8 : 2
x = 4
6x - 5x = 10
x = 10
4x + 7 = 15
4x = 15 - 7
4x = 8
x = 8 : 4
x = 2
9x - 5 = 3x + 7
9x - 3x = 7 + 5
6x = 12
x = 12 : 6
x = 2
5x + 3 = -3x + 19
5x + 3x = 19 - 3
8x = 16
x = 16 : 8
x = 2