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7*x+10 = (6/7)*x+47/9 // - (6/7)*x+47/9
7*x-((6/7)*x)-(47/9)+10 = 0
7*x+(-6/7)*x-47/9+10 = 0
43/7*x+43/9 = 0 // - 43/9
43/7*x = -43/9 // : 43/7
x = -43/9/43/7
x = -7/9
x = -7/9
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