a) (4x-2) - (3x+4) = 4x - 2 - 3x - 4 = x - 6
b) -2x - (4-x) + 2 = -2x - 4 + x + 2 = -x - 2
c) (2a-4) + (2a+4) = 2a - 4 + 2a + 4 = 4a
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a) (4x-2) - (3x+4) = 4x - 2 - 3x - 4 = x - 6
b) -2x - (4-x) + 2 = -2x - 4 + x + 2 = -x - 2
c) (2a-4) + (2a+4) = 2a - 4 + 2a + 4 = 4a