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