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x in (-oo:+oo)
2*x-(3/8) = 12 // - 12
2*x-(3/8)-12 = 0
2*x-3/8-12 = 0
2*x-99/8 = 0 // + 99/8
2*x = 99/8 // : 2
x = 99/8/2
x = 99/16
x = 99/16
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