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x in (-oo:+oo)
(-1/4)*(x+8)+(1/2)*(x+2) = x // - x
(-1/4)*(x+8)+(1/2)*(x+2)-x = 0
1/2*(x+2)-1/4*(x+8)-x = 0
1/2*(x+2)-1/4*(x+8)-x = 0
1/4*x-x-1 = 0
-3/4*x-1 = 0
-3/4*x-1 = 0
-3/4*x-1 = 0 // + 1
-3/4*x = 1 // : -3/4
x = 1/(-3/4)
x = -4/3
x = -4/3
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