-8x + 3 = 4x - 3
3 + 3 = 4x + 8x
12x = 6
x = 1/2
(3/2)x - 1 = 0.5x - 3
3x - 2 = x - 6
2x = -4
x = -2
或者
1.5x - 1 = 0.5x - 3
1.5x - 0.5x = 1 - 3
x = -2