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(2*x)/5 = (x+3)/3 // - (x+3)/3
(2*x)/5-((x+3)/3) = 0
(-1*(x+3))/3+(2*x)/5 = 0
(-1*5*(x+3))/(3*5)+(2*3*x)/(3*5) = 0
2*3*x-1*5*(x+3) = 0
x-15 = 0
(x-15)/(3*5) = 0
(x-15)/(3*5) = 0 // * 3*5
x-15 = 0
x-15 = 0 // + 15
x = 15
x = 15
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