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