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(6/7)*x+2 = 5*x+38/77 // - 5*x+38/77
(6/7)*x-(5*x)-(38/77)+2 = 0
(6/7)*x-5*x-38/77+2 = 0
116/77-29/7*x = 0 // - 116/77
-29/7*x = -116/77 // : -29/7
x = -116/77/(-29/7)
x = 4/11
x = 4/11
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