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7-3*x = 85/11-5*x // - 85/11-5*x
7-3*x-(-5*x)-(85/11) = 0
5*x-3*x-85/11+7 = 0
2*x-8/11 = 0 // + 8/11
2*x = 8/11 // : 2
x = 8/11/2
x = 4/11
x = 4/11
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