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5*x-3 = 3*x+8/2 // - 3*x+8/2
5*x-(3*x)-(8/2)-3 = 0
5*x-3*x-4-3 = 0
2*x-7 = 0 // + 7
2*x = 7 // : 2
x = 7/2
x = 7/2
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