Chapter 2 - Solving Equations - 2-2 Solving Two-Step Equations - Practice and Problem-Solving Exercises - Page 91: 31

$b=-8$

We need to get the b alone. We need to use multiplication to cancel out division, so we multiply both sides by 5 to get that $b+3=-5$. We now cancel out the addition by subtracting 3 on both sides, giving us a final answer of $b=-8$. We plug -8 in for b and confirm that our answer is, indeed, correct.