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(6*(x+4))/5 = 3*x-4 // - 3*x-4
(6*(x+4))/5-(3*x)+4 = 0
(6*(x+4))/5-3*x+4 = 0
(6*(x+4))/5+(-3*5*x)/5+(4*5)/5 = 0
6*(x+4)-3*5*x+4*5 = 0
20-9*x+24 = 0
44-9*x = 0
(44-9*x)/5 = 0
(44-9*x)/5 = 0 // * 5
44-9*x = 0
44-9*x = 0 // - 44
-9*x = -44 // : -9
x = -44/(-9)
x = 44/9
x = 44/9
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