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(3*(2*x+1))/2 = (4*(x-2))/5+x // - (4*(x-2))/5+x
(3*(2*x+1))/2-((4*(x-2))/5)-x = 0
(3*(2*x+1))/2+(-4/5)*(x-2)-x = 0
(3*(2*x+1))/2-4/5*(x-2)-x = 0
(3*(2*x+1))/2+(-4/5*2*(x-2))/2+(2*(-x))/2 = 0
3*(2*x+1)-4/5*2*(x-2)+2*(-x) = 0
22/5*x-2*x+31/5 = 0
12/5*x+31/5 = 0
(12/5*x+31/5)/2 = 0
(12/5*x+31/5)/2 = 0 // * 2
12/5*x+31/5 = 0
12/5*x+31/5 = 0 // - 31/5
12/5*x = -31/5 // : 12/5
x = -31/5/12/5
x = -31/12
x = -31/12
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