Chapter 2 - Solving Equations - Chapter Review - 2-3 Solving Multi-Step Equations - Page 153: 18

$b=-7.5$

We start with the given equation: $-4b-5+2b=10$ First, we add $5$ to both sides of the equation: $-4b+2b-5+5=10+5$ Next, we combine all of the like terms: $-2b=15$ Finally, we divide both sides of the equation by $-2$: $b=\frac{15}{-2}=-7.5$