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3/5-5*x = 128/5 // - 128/5
3/5-5*x-(128/5) = 0
3/5-5*x-128/5 = 0
-5*x-25 = 0 // + 25
-5*x = 25 // : -5
x = 25/(-5)
x = -5
x = -5
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