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(1/2)*(2*x+1)+(2/3)*(c+2) = (2/3)*(c+3)+4 // - (2/3)*(c+3)+4
(1/2)*(2*x+1)+(2/3)*(c+2)-((2/3)*(c+3))-4 = 0
(1/2)*(2*x+1)+(2/3)*(c+2)+(-2/3)*(c+3)-4 = 0
1/2*(2*x+1)+2/3*(c+2)-2/3*(c+3)-4 = 0
1/2*(2*x+1)+2/3*(c+2)-2/3*(c+3)-4 = 0
2/3*c-2/3*c+x-4-2+11/6 = 0
x-4-1/6 = 0
x-25/6 = 0
x-25/6 = 0
x-25/6 = 0 // + 25/6
x = 25/6
x = 25/6
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