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x in (-oo:+oo)
(x+11)/2 = -14 // + 14
(x+11)/2+14 = 0
(x+11)/2+(2*14)/2 = 0
x+2*14+11 = 0
x+39 = 0
(x+39)/2 = 0
(x+39)/2 = 0 // * 2
x+39 = 0
x+39 = 0 // - 39
x = -39
x = -39
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