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b in (-oo:+oo)
3*b-(4/4) = b-(1/12) // - b-(1/12)
3*b-b-(4/4)+1/12 = 0
3*b-b+1/12-1 = 0
2*b-11/12 = 0 // + 11/12
2*b = 11/12 // : 2
b = 11/12/2
b = 11/24
b = 11/24
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