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