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