Answer:
Step-by-step explanation:
1. 30
2. 23
3. 8
4.52
5.144
6.40
7. 210
8. 144
9. 135
10. 105
11. 2(207)
Find the answer in the attachment
r - 18 = 27
r = 27 + 18
r = 45
...
15