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4*x-(1/2) = 2/3 // - 2/3
4*x-(1/2)-(2/3) = 0
4*x-1/2-2/3 = 0
4*x-7/6 = 0 // + 7/6
4*x = 7/6 // : 4
x = 7/6/4
x = 7/24
x = 7/24
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