When solving a problem like this you can start with either ys are yz. To make it simple, lets start with ys, you are going to divide s underneath at the y, then do it the other side as which Will turn the equation into y+yz=x/z.Then you're going to do the same thing with yz making the equation y+y=x/z+s. Then add the 2 y's, to get 2y=x/z+s, Then for the final step you are going to divide 2 on both sides making the answer
[tex]y = (\frac{x}{z + s}) \div 2[/tex]
