Question

What is the answer to -1+|n+7|=10?

Answer 1

-18,4

Explanation:

(add one to both sides): |n+7|=11

(subtract 7): n=4

(go back to the equation before and change the sign): |-n-7|=11

(add 7 to both sides): -n=18

(multiply by -1): n=-18