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(1/4)*x+3/7 = 3*(x-(6/11)) // - 3*(x-(6/11))
(1/4)*x-(3*(x-(6/11)))+3/7 = 0
(1/4)*x-3*(x-6/11)+3/7 = 0
x/4-3*(x-6/11)+3/7 = 0
(-3*4*7*(x-6/11))/(4*7)+(7*x)/(4*7)+(3*4)/(4*7) = 0
7*x-3*4*7*(x-6/11)+3*4 = 0
12-77*x+504/11 = 0
636/11-77*x = 0
(636/11-77*x)/(4*7) = 0
(636/11-77*x)/(4*7) = 0 // * 4*7
636/11-77*x = 0
636/11-77*x = 0 // - 636/11
-77*x = -636/11 // : -77
x = -636/11/(-77)
x = 636/847
x = 636/847
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