Answer:
The area is 63a
The perimeter is 39b
Step-by-step explanation:
First, we can see that he used the Distributive property. Then after that, he used the Additive property. After that, he combined like terms and the used the additive property again. Finally, he used the divisive property.
Answer: 3/4 I’m pretty sure. I looked at it and got confused so not 100% sure.