Answer:
Part 1)
Part 2)
Step-by-step explanation:
we know that
When divide exponents (or powers) with the same base, subtract the exponents
Part 1) we have
Part 2) we have
Add more details to answer
Helpful source:
https://percent-calc.com/what-is-9-of-15000
Answer: 40
Combine like terms:
5a-7a=-2a
3b+4b=7b
-2a+7b
Hope this helps!!