Basic College Mathematics (9th Edition)

$b=-4$
We are given the equation $-5=2b+3$. We can solve for b by first subtracting 3 from both sides. $-5-3=2b+3-3$ $2b=-8$ Divide both sides by 2. $\frac{2b}{2}=\frac{-8}{2}$ Therefore, $b=-4$.