Answer: r = 3.2666 or 3.3
Step-by-step explanation:
use the distributive property
3r +9. 6 + 1 = 19.9
3r + 10.1 = 19.9
- 10.1 - 10.1
3r = 9.8
3r/3 = 9.8/3
r = 3.2666
3.3
