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x+x-(2/3)-(1/2) = 5*x+1/12 // - 5*x+1/12
x+x-(5*x)-(2/3)-(1/2)-(1/12) = 0
x+x-5*x-2/3-1/2-1/12 = 0
-3*x-5/4 = 0 // + 5/4
-3*x = 5/4 // : -3
x = 5/4/(-3)
x = -5/12
x = -5/12
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