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(6*(x-11))/5 = (5*(x+11))/6 // - (5*(x+11))/6
(6*(x-11))/5-((5*(x+11))/6) = 0
(6*(x-11))/5+(-5/6)*(x+11) = 0
(6*(x-11))/5-5/6*(x+11) = 0
(6*(x-11))/5+(-5/6*5*(x+11))/5 = 0
6*(x-11)-5/6*5*(x+11) = 0
11/6*x-671/6 = 0
(11/6*x-671/6)/5 = 0
(11/6*x-671/6)/5 = 0 // * 5
11/6*x-671/6 = 0
11/6*x-671/6 = 0 // + 671/6
11/6*x = 671/6 // : 11/6
x = 671/6/11/6
x = 61
x = 61
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