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Anonymous
It is two expressions which are disjoint.
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(x + 4) + (x + 5) = 2x + 9
x/(x + 4) = 4/(x + 4) + 2 (x - 4)/(x + 4) = 2 x - 4 = 2x + 8 -x = 12 x = -12
4x + 4 or 4(x + 1)
(X) x (4) x (8) x (12) = 384 X
4 + 24 + x = 28 + x