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x in (-oo:+oo)
(1/2)*(2*x-3) = x+7 // - x+7
(1/2)*(2*x-3)-x-7 = 0
1/2*(2*x-3)-x-7 = 0
1/2*(2*x-3)-x-7 = 0
-7-3/2 = 0
-17/2 = 0
-17/2 = 0
-17/2 = 0 // * 2
-17 = 0
x belongs to the empty set
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