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(5/6)*x-x+9 = 373/42 // - 373/42
(5/6)*x-x-(373/42)+9 = 0
(5/6)*x-x-373/42+9 = 0
5/42-1/6*x = 0 // - 5/42
-1/6*x = -5/42 // : -1/6
x = -5/42/(-1/6)
x = 5/7
x = 5/7
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