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(3/5)*(4*x+11) = 3*(1-(4*x))+18 // - 3*(1-(4*x))+18
(3/5)*(4*x+11)-(3*(1-(4*x)))-18 = 0
(3/5)*(4*x+11)-3*(1-4*x)-18 = 0
3/5*(4*x+11)-3*(1-4*x)-18 = 0
3/5*(4*x+11)-3*(1-4*x)-18 = 0
72/5*x-18+18/5 = 0
72/5*x-72/5 = 0
72/5*x-72/5 = 0
72/5*x-72/5 = 0 // + 72/5
72/5*x = 72/5 // : 72/5
x = 72/5/72/5
x = 1
x = 1
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