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4*x+17/5 = 5*x-(18/5) // - 5*x-(18/5)
4*x-(5*x)+17/5+18/5 = 0
4*x-5*x+17/5+18/5 = 0
7-x = 0 // - 7
-x = -7 // * -1
x = 7
x = 7
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