Oh, dude, like, the common factors of 9, 21, and 63 are 1 and 3. Yeah, that's it. Not much to it, really. Just a couple of numbers hanging out together, keeping it simple.
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The factors of 63 are: 1, 3, 7, 9, 21, 63
composite factors of 63: 9, 21, and 63factors of 63: 1, 3, 7, 9, 21 and 63
21 is a factor of 63 (21 * 3 = 63).71 is a prime number.Since 71 has no common factors with 63, they must be multiplied together to find their least common multiple.Thus, the least common multiple (LCM) of 21, 63 and 71 is 63 * 71 = 4473.
63/78. You need to find a common factor of 63 and 78 and divide the fractions until they no longer have factors in common. Both 63 and 78 are divisible by 3. 21/26. 21 and 26 have no common factors so 21/26 is the lowest/simplest form.
Since 9 is a factor of 63, all of its factors are common.