13/7 of 21 is 39.
4/3 minus 5/7 = 13/21
Four sevenths of 21 is 12.
3 / 1/7 = 3 x 7 = 21 Therefore, there are 21 sevenths in three wholes.
21
10 and 6 sevenths
21
the answer is 21.
the answer is: 18six sevenths times twenty one wholes = 18
The sum of 1/3 and 2/7 is 13/21
4/7 of 21 is 12.
To find how many sevenths are in 3, you can divide 3 by ( \frac{1}{7} ). This is equivalent to multiplying 3 by 7, which gives you 21. Therefore, there are 21 sevenths in 3.
3/7 x 21 = 9