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(4*(x+2))/5 = 2*x-8 // - 2*x-8
(4*(x+2))/5-(2*x)+8 = 0
(4*(x+2))/5-2*x+8 = 0
(4*(x+2))/5+(-2*5*x)/5+(5*8)/5 = 0
4*(x+2)-2*5*x+5*8 = 0
8-6*x+40 = 0
48-6*x = 0
(48-6*x)/5 = 0
(48-6*x)/5 = 0 // * 5
48-6*x = 0
48-6*x = 0 // - 48
-6*x = -48 // : -6
x = -48/(-6)
x = 8
x = 8
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