Can someone check if I'm correct please.

13 + w/7 = -18
(7)13+(7)w/7= (7)-18
91 + w = -126
91-91 + w = (91)-126
w = 217
Thanks!

3 answers

13 + w/7 = -18
w/7 = -31
w = -217

You forgot the sign.

Thanks!

You're welcome.