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Popular >

Find the GCF 21 , 6

Solution

gcf

21, 6

3

Solution steps

21, 6

Prime factorization of

21 : 3 \cdot 7

21

21

divides by

321 = 7 \cdot 3

= 3 \cdot 7

3, 7

are all prime numbers, therefore no further factorization is possible

= 3 \cdot 7

Prime factorization of

6 : 2 \cdot 3

6

6

divides by

26 = 3 \cdot 2

= 2 \cdot 3

2, 3

are all prime numbers, therefore no further factorization is possible

= 2 \cdot 3

The prime factors common to

21, 6

are

= 3

(3/4) /36

\frac{21}{4}

\frac{155}{3}

\frac{23}{12}

\frac{21}{16}