Answer:
A
B
E
Explanation:
For A, we can simplify it to 2c + 2d by combining like terms. We can then factor out 2 and get 2(c + d).
For B, we combine like terms and 7y - x. We can move the x in front and get -x + 7y.
For E we can factor out 2 and get 2(2j + 3k).
Hope this helps