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(2/3)*(2*x+2) = 2*(1-(4*x))+18 // - 2*(1-(4*x))+18
(2/3)*(2*x+2)-(2*(1-(4*x)))-18 = 0
(2/3)*(2*x+2)-2*(1-4*x)-18 = 0
2/3*(2*x+2)-2*(1-4*x)-18 = 0
2/3*(2*x+2)-2*(1-4*x)-18 = 0
28/3*x-18-2/3 = 0
28/3*x-56/3 = 0
28/3*x-56/3 = 0
28/3*x-56/3 = 0 // + 56/3
28/3*x = 56/3 // : 28/3
x = 56/3/28/3
x = 2
x = 2
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