Respuesta :

Answer:

answer in explanation

Step-by-step explanation:

1. = 7x

2. =10x+ 7y

3. =8A + 10B - 1C

4. = 9M + 13N

5. = 5 x+ 9y + 18z

6. = 6x

7. = 20B

8, = 40C

9. = -18w