## Algebra 1: Common Core (15th Edition)

a. $−a−5$ b. $x−31$ c. $−4x+12$ d. $−6m+9n$
The multiplication property of $-1$ states that $-(x)$ is the same thing as $-1(x)$. Apply the distributive property to each expression: for a, you should get $\boxed{-a-5}$ for b, you should get $\boxed{x-31}$ for c, you should get $\boxed{-4x+12}$ for d, you should get $\boxed{-6m + 9n}$