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4*x-(1/2) = 111/2 // - 111/2
4*x-(1/2)-(111/2) = 0
4*x-1/2-111/2 = 0
4*x-56 = 0 // + 56
4*x = 56 // : 4
x = 56/4
x = 14
x = 14
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