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b in (-oo:+oo)
-(2*b)-6 = -14 // + 14
14-(2*b)-6 = 0
14-2*b-6 = 0
8-2*b = 0 // - 8
-2*b = -8 // : -2
b = -8/(-2)
b = 4
b = 4
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