2(x + 5) = 14
x = 2
x + 9 = 6x -31
x = 8
-9x - 4 = -4x + 21
x = -5
4 + 4x = 7 + 1 + 6x + 6
26 + 3n = -4(3n + 1)
3(2x - 1) + 4 = 2(x + 8) + 6
x = 5