18x + 5
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2 - 4x - 2x + 4 = 6 - 6x
(4 + 2x) - (-2x + 1) = 13 + 6 4 + 2x + 2x -1 = 19 4x +3 = 19 4x = 19 - 3 4x = 16 therefore x = 16/4 x = 4
Add 4x + 2x = 6x + 4 = 6x + 4
(2x - 8)(-4x + 4) = -8x2 + 40x - 32
If 4x - 2x + 4 = 10, the solution is 2x + 4 = 10 and x = 3.