Answer:
x-x = 0
x+x= 2x
x×x= x^2
have a nice day...
2r + 2s = 50
2r - s = 17
-----------subtract
3s = 33
s = 11
2r - 11 = 17
2r = 28
r = 14
so r = 14 and s = 11
answer is C. r = 14, s = 11
