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4*x+4/5 = 84/55 // - 84/55
4*x+4/5-(84/55) = 0
4*x+4/5-84/55 = 0
4*x-8/11 = 0 // + 8/11
4*x = 8/11 // : 4
x = 8/11/4
x = 2/11
x = 2/11
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