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(2/7)*x+1/3 = x+47/231 // - x+47/231
(2/7)*x-x+1/3-(47/231) = 0
(2/7)*x-x+1/3-47/231 = 0
10/77-5/7*x = 0 // - 10/77
-5/7*x = -10/77 // : -5/7
x = -10/77/(-5/7)
x = 2/11
x = 2/11
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