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4*x+5*x+1/5 = 496/5 // - 496/5
4*x+5*x+1/5-(496/5) = 0
4*x+5*x+1/5-496/5 = 0
9*x-99 = 0 // + 99
9*x = 99 // : 9
x = 99/9
x = 11
x = 11
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