1. (9m + 6) + (–5m – 6)

A= 4m + 12
B= 14m + 12
C= 14m – 12
D=4m

3. (6h + 1) – (9h + 4)

A= –3h – 3
B= 15h – 5
C= –3h + 3
D= –3h + 5


5. (4x + 4) + (3x + 2 + 1)

A= 7x + 3
B= x + 7
C= 7x + 7
D=8x + 6