Answer:
r = 1.9
Step-by-step explanation:
7r + 7 = 20.3
- 7 - 7
7r = 13.3
divide by 7
7(r + 1) = 20.3
Multiply the parenthesis by 7:
Subtract 7 from each side:
Divide 13.3 by 7 to find r:
