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(3*(x-4))/5 = -2*x // + -2*x
(3*(x-4))/5-(-2*x) = 0
(3*(x-4))/5+2*x = 0
(3*(x-4))/5+(2*5*x)/5 = 0
3*(x-4)+2*5*x = 0
13*x-12 = 0
(13*x-12)/5 = 0
(13*x-12)/5 = 0 // * 5
13*x-12 = 0
13*x-12 = 0 // + 12
13*x = 12 // : 13
x = 12/13
x = 12/13
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