Question

I don't know what to do so can someone help me​

Answer 1

Answer:
1. = 8r+7t
2. = 8(r+t)
3. = 8(r-t)

Answer 2

1. 8r+7

2. 8 ( r-t)

3. 2(3r+5t)

Explanation:

See Image below:)