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b in (-oo:+oo)
(5/6)*b-3 = -193/66 // + -193/66
(5/6)*b-(-193/66)-3 = 0
(5/6)*b+193/66-3 = 0
5/6*b-5/66 = 0 // + 5/66
5/6*b = 5/66 // : 5/6
b = 5/66/5/6
b = 1/11
b = 1/11
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