x = yz + y

The answer sheet says the answer is:

y = x / z + 1

I have followed the rules of doing the same to both sides etc but cannot get to this answer or work out where the 1 has come.

Please help.

Make y the subject.....note that the right side can be factored as

x = y (z + 1) now....divide both sides by (z + 1) and we have that

x / ( z + 1) = y