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6/7-7*x+5/7 = (-6*x)/7 // - (-6*x)/7
6/7-7*x-((-6*x)/7)+5/7 = 0
(6/7)*x-7*x+6/7+5/7 = 0
11/7-43/7*x = 0 // - 11/7
-43/7*x = -11/7 // : -43/7
x = -11/7/(-43/7)
x = 11/43
x = 11/43
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