12x(x-8) - 4x(3x-5) = 10 - 2612x^2 - 96x - 12x^2 + 20x = -16-76x = -16x = 16/76x = 2/19
5x - 2(x-4) = 9x + 235x - 2x + 8 = 9x + 233x + 8 = 9x + 23-6x = 15x = -15/6x = -5/2
11x - (3x + 4) = 9x - 711x - 3x - 4 = 9x - 78x - 4 = 9x - 7-x = -3x = 3
12x(x-8) - 4x(3x-5) = 10 - 26
12x^2 - 96x - 12x^2 + 20x = -16
-76x = -16
x = 16/76
x = 2/19
5x - 2(x-4) = 9x + 23
5x - 2x + 8 = 9x + 23
3x + 8 = 9x + 23
-6x = 15
x = -15/6
x = -5/2
11x - (3x + 4) = 9x - 7
11x - 3x - 4 = 9x - 7
8x - 4 = 9x - 7
-x = -3
x = 3