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3*x+x-(7/12) = 3*x+7/3+2 // - 3*x+7/3+2
3*x+x-(3*x)-(7/12)-(7/3)-2 = 0
3*x+x-3*x-7/12-7/3-2 = 0
x-59/12 = 0 // + 59/12
x = 59/12
x = 59/12
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