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2*x-((3/5)*x) = 11/2 // - 11/2
2*x-((3/5)*x)-(11/2) = 0
2*x+(-3/5)*x-11/2 = 0
7/5*x-11/2 = 0 // + 11/2
7/5*x = 11/2 // : 7/5
x = 11/2/7/5
x = 55/14
x = 55/14
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