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3*x = (1/2)*(2*x-8)-((5/4)*(x+8)) // - (1/2)*(2*x-8)-((5/4)*(x+8))
(5/4)*(x+8)-((1/2)*(2*x-8))+3*x = 0
(-1/2)*(2*x-8)+(5/4)*(x+8)+3*x = 0
5/4*(x+8)-1/2*(2*x-8)+3*x = 0
5/4*(x+8)-1/2*(2*x-8)+3*x = 0
1/4*x+3*x+14 = 0
13/4*x+14 = 0
13/4*x+14 = 0
13/4*x+14 = 0 // - 14
13/4*x = -14 // : 13/4
x = -14/13/4
x = -56/13
x = -56/13
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