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-6 + 4x + (9-2x) = -6 + 4x + 9 - 2x = [ 3 + 2x ]
2x = -x +9
2x + 9 = 6x + 1 9 - 1 = 6x - 2x 8 = 4x x = 2
(2x - 9)(2x - 9) or (2x - 9)2
5x + x - 6x + 2x = 2x