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b in (-oo:+oo)
(3*b)/4 = 11/2 // - 11/2
(3*b)/4-(11/2) = 0
(3*b)/4-11/2 = 0
3/4*b-11/2 = 0 // + 11/2
3/4*b = 11/2 // : 3/4
b = 11/2/3/4
b = 22/3
b = 22/3
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