3 - 8
The LCM of 21 and 56 is 168.
56
When figuring out what number goes both into 56 and 63, you should look at the factor pairs. 56: 1 x 56, 2 x 28, 4 x 14, 7 x 8 63: 1 x 63, 3 x 21, 7 x 9 7 goes into both 56 and 63.
LCM(21, 49, 56) = 1176
3 - 8
Twice, with 14 left over.
21/56 OR 21 -- 56
56-21 = 35
The greatest, (Highest) Common Factor of 21 and 56 is 7
The HCF of 56 and 21 is 7
It is: 21/56 = 3/8 by dividing 21 and 56 by their HCF which is 7
The LCM of 21 and 56 is 168.
The factors of 21 are: 1, 3, 7, 21. The factors of 56 are: 1, 2, 4, 7, 8, 14, 28, 56.
56
21/56 = 3/8
Factors of 21 are 1,3,7,21 Factors of 56 are 1,2,4,7,8,14,28,56.