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x in (-oo:+oo)
-14 = (1/2)*x-3 // - (1/2)*x-3
3-((1/2)*x)-14 = 0
(-1/2)*x-14+3 = 0
-1/2*x-11 = 0 // + 11
-1/2*x = 11 // : -1/2
x = 11/(-1/2)
x = -22
x = -22
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