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(1/5)*(3*x+6) = 2*(4-(4*x))+19 // - 2*(4-(4*x))+19
(1/5)*(3*x+6)-(2*(4-(4*x)))-19 = 0
(1/5)*(3*x+6)-2*(4-4*x)-19 = 0
1/5*(3*x+6)-2*(4-4*x)-19 = 0
1/5*(3*x+6)-2*(4-4*x)-19 = 0
43/5*x-19-34/5 = 0
43/5*x-129/5 = 0
43/5*x-129/5 = 0
43/5*x-129/5 = 0 // + 129/5
43/5*x = 129/5 // : 43/5
x = 129/5/43/5
x = 3
x = 3
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