63
No.
Yes. By multiplying 3/3 times 7/12, you get 21/36.
Reduced to its most simplified form, 21 over 12 (or 7/4) is "one and three-quarters" 13/4
It is 1 11/21. :)
7/24 * 6/21 = 1/12
'3' 3 x 4 = 12 3 x 7 = 21 NB '7' is also a prime number.
Because 14 goes into 21 1 and 1/2 times.
The result is 6 2/3
12/14, 18/21
21 times 12 equals 252.
21/36, or 7/12
18/21 x 15 is 12 6/7