How do you find the greatest common factor of 36, 12?

1 Answer
MeneerNask
Nov 5, 2016

The long way would be to factorize both numbers into primes.

Explanation:

36=2xx2xx3xx3
12=2xx2xx3
Primes they both have in common:
2xx2xx3=12

But you could also have seen that:
36=3xx12
12=1xx12

The long method always works, but seeing may allow you a sortcut.

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