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x in (-oo:+oo)
-x/11 = 11.5 // - 11.5
-x/11-11.5 = 0
-1/11*x-11.5 = 0 // + 11.5
-1/11*x = 11.5 // : -1/11
x = 11.5/(-1/11)
x = -126.50000127
x = -126.50000127
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