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