6. factors of 12 are 1, 2, 3, 4, 6, and 12. factors of 30 are 1, 2, 3, 5, 6, 10, 15, and 30.
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Because 4 is the largest number that will divide into both of those numbers evenly, with no remainder.
for example1. The largest number that goes exactly into both 8 and 12 is 4, so the Greatest Common Factor is 4.2. Divide both top and bottom by 4: ÷ 48 = 2123÷ 4And the answer is: 2/3
The greatest common factor of 8 and 12 is 4.
Because 60 is the smallest number that both 12 and 20 will divide into evenly.
The Least Common Multiple (LCM) is the smallest number that two or more numbers will divide into evenly and 12 is the smallest number that both 4 and 6 divide into evenly.