4x + 8 - 15 + 3x - x - 3 = 6x - 10
3x + 9 - 12 + 4x - 4x - 3x - 3 = - 6
5x + 20 - 5 + x - x - 3 = 5x + 12
4x + 4 - 25 + 5x - 5x - 4x - 1 = - 22
2x + 4 - 20 + 5x - 5x - 2x - 3 = - 19
4x + 4 - 12 + 4x - x - 5 = 7x - 13
2x + 8 - 2 + x - x - 2x - 1 = 5
x + 4 - 10 + 2x - x - 4 = 2x - 10