Answer:
W= -217
Explanation:
13+w/7 = -18
13-13=0. So cross out the 13.
-18-13= -31
So we have the equation looks like this:
w/7= -31
I'm going to multiply -31 times 7 and that gives me -217.
Check my answer: 13+-217/7= -18
So, w= -217.
Hope this helps
-Amelia