Question

Y-z/z says use y=2 and z=4

Answer 1

We have the expression

$y-\frac{z}{z}$

By substituting y=2 and z=4 into the last expression, we get

$2-\frac{4}{4}$

which gives

$2-1$

since 2 minus 1 is equal to 1, then the solution is 1.