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5*x-((1/2)*(3*x+8)) = -((7/2)*x)-4 // + -((7/2)*x)-4
5*x-((1/2)*(3*x+8))+(7/2)*x+4 = 0
(-1/2)*(3*x+8)+5*x+(7/2)*x+4 = 0
5*x-1/2*(3*x+8)+(7*x)/2+4 = 0
(-1/2*2*(3*x+8))/2+(2*5*x)/2+(7*x)/2+(2*4)/2 = 0
2*5*x-1/2*2*(3*x+8)+7*x+2*4 = 0
7*x+7*x-8+8 = 0
14*x-8+8 = 0
14*x = 0
(14*x)/2 = 0
(14*x)/2 = 0 // * 2
14*x = 0
14*x = 0 // : 14
x = 0
x = 0
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