Answer:
Joe
Hope this helps!
Helena
Step-by-step explanation:
7y^2z is not modified in either the answer or the question.
6yz^2 - 3yz^2 = 3yz^2
-5 + 2 = - 3
Combining the the partial answers, you get
7y^2 + 3yz^2 - 3
which is the same as the original question.
