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2*x+x-(3/12) = 2*x+3/2+6 // - 2*x+3/2+6
2*x+x-(2*x)-(3/12)-(3/2)-6 = 0
2*x+x-2*x-1/4-3/2-6 = 0
x-31/4 = 0 // + 31/4
x = 31/4
x = 31/4
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