1.) 7x - 3(x - 4) = 8 Multiply/distribute 3 into (x - 4)
7x - 3x + 12 = 8
4x + 12 = 8 Subtract 12 on both sides
4x = -4 Divide 4 on both sides
x = -1
2.) 4x - 8 + 2x = 40
6x - 8 = 40 Add 8 on both sides
6x = 48 Divide 6 on both sides
x = 8
3.) 6x - 6 + 11 = 53
6x + 5 = 53 Subtract 5 on both sides
6x = 48 Divide 6 on both sides
x = 8
4.) 17 = x - 3x - 3
17 = -2x - 3 Add 3 on both sides
20 = -2x Divide -2 on both sides
-10 = x