A composite number is a number that has more than two factors. The factors of 21 are 1, 3, 7, and 21. Therefore, 21 is a composite number.
(21-21)+(21-21)+21 = 0+0+21 = 21
The LCM is 21.
21
21*1 = 21
21-21 = 0
21 = 21
21*21 = 441 square feet.21*21 = 441 square feet.21*21 = 441 square feet.21*21 = 441 square feet.
5/7 - 5/21 = 15/21 - 5/21 = 10/215/7 - 5/21 = 15/21 - 5/21 = 10/215/7 - 5/21 = 15/21 - 5/21 = 10/215/7 - 5/21 = 15/21 - 5/21 = 10/21
21 + 21 = 42.
How she is tall abt his height?
21 x 21 = 441
-21