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x in (-oo:+oo)
(1/2)*x-1/4 = -23/4 // + -23/4
(1/2)*x-1/4-(-23/4) = 0
(1/2)*x-1/4+23/4 = 0
1/2*x+11/2 = 0 // - 11/2
1/2*x = -11/2 // : 1/2
x = -11/2/1/2
x = -11
x = -11
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