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x in (-oo:+oo)
(1/2)*(2*x-6) = 3*x-x+5 // - 3*x-x+5
(1/2)*(2*x-6)-(3*x)+x-5 = 0
(1/2)*(2*x-6)-3*x+x-5 = 0
1/2*(2*x-6)-3*x+x-5 = 0
1/2*(2*x-6)-3*x+x-5 = 0
x-2*x-5-3 = 0
-x-5-3 = 0
-x-8 = 0
-x-8 = 0
-x-8 = 0 // + 8
-x = 8 // * -1
x = -8
x = -8
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