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(3/2)*x-12 = 2*x-28 // - 2*x-28
(3/2)*x-(2*x)-12+28 = 0
(3/2)*x-2*x-12+28 = 0
16-1/2*x = 0 // - 16
-1/2*x = -16 // : -1/2
x = -16/(-1/2)
x = 32
x = 32
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