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5/9 = 5*(9*x-6) // - 5*(9*x-6)
5/9-(5*(9*x-6)) = 0
5/9-5*(9*x-6) = 0
(-5*9*(9*x-6))/9+5/9 = 0
5-5*9*(9*x-6) = 0
275-405*x = 0
(275-405*x)/9 = 0
(275-405*x)/9 = 0 // * 9
275-405*x = 0
275-405*x = 0 // - 275
-405*x = -275 // : -405
x = -275/(-405)
x = 55/81
x = 55/81
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