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b in (-oo:+oo)
(1/8)*(b+2) = 3/8 // - 3/8
(1/8)*(b+2)-(3/8) = 0
(1/8)*(b+2)-3/8 = 0
1/8*(b+2)-3/8 = 0
(1/8*8*(b+2))/8-3/8 = 0
1/8*8*(b+2)-3 = 0
b-1 = 0
(b-1)/8 = 0
(b-1)/8 = 0 // * 8
b-1 = 0
b-1 = 0 // + 1
b = 1
b = 1
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