Question

Someone help me with these questions please :(

Answer 1

I feel like we're missing what r and p represent or it didn't quite capture everything, but here's as much as I can help

6 . 9r

7. 7r - 8

8. -19r - 22p

9. 8r + 9p - 7

10. 0

11. -19p - 2r

12. 3 1/4r

13. 9r

14. 2p

hope it's helpful

Answer 2

6. 4r + 9r —> 4 + 9= 13 - 11r + 7r —> 11 + 7= 18-13= 5r