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