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7/4-((1/2)*x) = (1/3)*x+15/9 // - (1/3)*x+15/9
7/4-((1/2)*x)-((1/3)*x)-(15/9) = 0
(-1/2)*x+(-1/3)*x+7/4-5/3 = 0
1/12-5/6*x = 0 // - 1/12
-5/6*x = -1/12 // : -5/6
x = -1/12/(-5/6)
x = 1/10
x = 1/10
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