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21+21+17=59
No, 21 over 10 can not be simplified any farther because there is no common factor between 10 and 21 (other than one).
You need to divide to compare: 9/17 = 0.529 11/21 = 0.524 as you can see, 9/17 is larger
11 9 _is greater than _ 21 17
To compare 21 feet and 17 yards, we need to convert them to the same unit. Since 1 yard equals 3 feet, 17 yards is equivalent to 51 feet (17 x 3 = 51). Therefore, 21 feet is less than 17 yards, making 17 yards greater.