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x in (-oo:+oo)
(1/2)*x-5 = (3/2)*x-4 // - (3/2)*x-4
(1/2)*x-((3/2)*x)-5+4 = 0
(1/2)*x+(-3/2)*x-5+4 = 0
-x-1 = 0 // + 1
-x = 1 // * -1
x = -1
x = -1
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