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First you need to break the numbers into their prime factors. In this case we get:
63 = 3x3x7
21 = 3x7
The next step is to identify any common prime factors. In this case both have a 3 and a 7 as prime factors. Multiply these together and you get 3x7 = 21. This is the HCF. To find the LCM you just multiply the numbers together and divide by the HCF. 63x21/21 = 63
Thus 63 is the LCM.
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∙ 12y ago
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What is the HCF of 63 and 42 and 126?
The GCF is 21.
What is hcf of 14 and 21 and 63?
The GCF is 7.
What is the HCF of 63 and 21?
It is 21
What is the LCM of 3 9 and 21?
LCM OF 9,3 AND 21 IS 63. CHECK FOR YOURSELF IF YOU ARE NOT SURE.
What is the LCM of 21 and 147 and 63?
The LCM is 441.
What is the hcf of 63 and 84?
It is: 21
What is the LCM of 21 and 147and 63?
For 147, 63, 21 the LCM is: 441
What is the HCF of 42 and 63?
The GCF is 21.
What is the LCM of 21 and 63?
The least common multiple is the smallest number that is multiple of two or more numbers. 21: 21, 42, 63 63: 63 The LCM of 21 and 63 is 63.
What is the LCM 9 and 21?
7 x 9 = 63 3 x 21 = 63 Therefore, the LCM of 9 and 21 is 63.
What is the LCM of 9 and 21 and?
Until that other number shows up, the LCM is 63.
What is the gcf and LCM of 21 and 63?
21 and 63, respectively.
