Answer:

Step-by-step explanation:

Expand:


Add 27 to both sides:


Add 12x to both sides:


Divide both sides by 4:


Answer:
1. yes
2.no
Step-by-step explanation:
I hope this helped
Answer:
13
Step-by-step explanation:
Sorry im in 5th grade.
Answer:
Associative property of addition
Step-by-step explanation:
A change of grouping is the associative property of addition.