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7*x+2/7 = 8*x+1/7 // - 8*x+1/7
7*x-(8*x)+2/7-(1/7) = 0
7*x-8*x+2/7-1/7 = 0
1/7-x = 0 // - 1/7
-x = -1/7 // * -1
x = 1/7
x = 1/7
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