1) 5x - 6(5 + 2x) = x - 25x - 30 - 12x = x - 2-7x - 30 = x - 2-7x - x = 30 - 2-8x = 28x = -3.5
2) 9x - 2(-1 - x) = x - 59x + 2 + 2x = x - 511x + 2 = x - 511x - x = -5 - 210x = -7x = -0.7
3) 6x - 8(-7 + 9x) = -2x - 86x + 56 - 72x = -2x - 8-66x + 56 = -2x - 8-66x + 2x = -8 - 56-64x = -64x = 1
4) -2x + 1 - 3(x - 4) = 4(3 - x) + 4-2x + 1 - 3x + 12 = 12 - 4x + 4-5x + 13 = 16 - 4x-5x + 4x = 16 - 4x - 13-x = -3x = 3
1) 5x - 6(5 + 2x) = x - 2
5x - 30 - 12x = x - 2
-7x - 30 = x - 2
-7x - x = 30 - 2
-8x = 28
x = -3.5
2) 9x - 2(-1 - x) = x - 5
9x + 2 + 2x = x - 5
11x + 2 = x - 5
11x - x = -5 - 2
10x = -7
x = -0.7
3) 6x - 8(-7 + 9x) = -2x - 8
6x + 56 - 72x = -2x - 8
-66x + 56 = -2x - 8
-66x + 2x = -8 - 56
-64x = -64
x = 1
4) -2x + 1 - 3(x - 4) = 4(3 - x) + 4
-2x + 1 - 3x + 12 = 12 - 4x + 4
-5x + 13 = 16 - 4x
-5x + 4x = 16 - 4x - 13
-x = -3
x = 3