Answer:
x=11
QS = 76
Explanation:
Since R is the midpoint of QS,
QR = RS
2x+16 = 5x-17
5x-2x = 17+16 = 33
3x = 33
Divide by 3,
x = 11
QS = 2x+16+5x-17 = 7x-1 = (7*11)-1 = 77-1 = 76
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