Answer:
The correct answer is 20x-1
2r + 2s = 50
2r - s = 17
-----------subtract
3s = 33
s = 11
2r - s = 17
2r - 11 = 17
2r = 28
r = 14
so r = 14 and s = 11
answer is C. r = 14, s = 11
First add the biggest number like thousand together and the go in to the last numbers
