Answer:
480
Step-by-step explanation:
So we have the expression:

And we want to evaluate it for z=5 and c=2:
So:

Multiply within the parentheses:

Subtract within the parentheses:

Multiply:

So it's - 19/9 - (-13/3) therefore -19/9 + 13/3.
So it needs to have a common denominator so it would be 39/9 instead of 13/3.
Therefore the answer is 20/9 or 2 2/9
Not equal !! i hope this helped :))