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Popular >

gcd 12,20

Solution

gcf

12, 20

4

Solution steps

12, 20

Prime factorization of

12 : 2 \cdot 2 \cdot 3

12

12

divides by

212 = 6 \cdot 2

= 2 \cdot 6

6

divides by

26 = 3 \cdot 2

= 2 \cdot 2 \cdot 3

2, 3

are all prime numbers, therefore no further factorization is possible

= 2 \cdot 2 \cdot 3

Prime factorization of

20 : 2 \cdot 2 \cdot 5

20

20

divides by

220 = 10 \cdot 2

= 2 \cdot 10

10

divides by

210 = 5 \cdot 2

= 2 \cdot 2 \cdot 5

2, 5

are all prime numbers, therefore no further factorization is possible

= 2 \cdot 2 \cdot 5

The prime factors common to

12, 20

are

= 2 \cdot 2

Multiply the numbers:

2 \cdot 2 = 4

= 4

14 + (- 9) + (- 9)

- 2 + (- 3) + 4 - (- 3) - 5

4.5

0.00002

5 + (- 4) + (- 7) + 2