x-366= -415
89+y=112
-27=w-14
We've done a bunch of these for you. I think it would be better to see YOU do them. So I'll work out the first one, and you post your solutions to the second two and we'll look them over.
$\displaystyle x - 366 = -415$
$\displaystyle x - 366 + 366 = -415 + 366$
$\displaystyle x = 49$
The last two are done using almost exactly the same method.
-Dan