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b in (-oo:+oo)
(1/4)*(b+1) = 2 // - 2
(1/4)*(b+1)-2 = 0
1/4*(b+1)-2 = 0
1/4*(b+1)-2 = 0
1/4*b-7/4 = 0
1/4*b-7/4 = 0
1/4*b-7/4 = 0 // + 7/4
1/4*b = 7/4 // : 1/4
b = 7/4/1/4
b = 7
b = 7
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