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(X) x (4) x (8) x (12) = 384 X
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9x + 4 - x + 8 = 8x + 12
4 x 12 - 45 + 8 = 48 - 45 + 8 = 3 + 8 = 11
x/(x + 4) = 4/(x + 4) + 2 (x - 4)/(x + 4) = 2 x - 4 = 2x + 8 -x = 12 x = -12
(32 + (4 x 4 x 4)) / 8 = 12
X = 4