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Wesley Silva
Mathematics
7 August, 09:06
Find GCF of 24 and 21
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Rodolfo Gilbert
7 August, 09:17
0
The greatest common factor of 24 and 21 is 3
3x8=24 and 3x7=21
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Lena Wagner
7 August, 09:28
0
Good night,
To find the GCF of several numbers the first thing you have to do is decompose the numbers, so:
24 | 2
12 | 2
6 | 2
3 | 3
1
24 = 2 x 2 x 2 x3
24 = 2³ x 3
21 | 3
7 | 7
1
21 = 7 x 3
GCF = common factors with the lowest exponents
GCF = 3
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