How do you solve -7 + w = 11 ?

Solve  -7 + w = 11

---

You need to get the variable, w, by itself.  To do that, the -7 needs to be moved to the other side.
To move -7 to the other side, add 7 to each side.

-7 + w = 11​
w = 18  {added 7 to each side}

Ask the House