Here we will show you step-by-step how to simplify 21/780 to the simplest form.
The key to solving this problem is to find the greatest common divisor of 21 and 780.
To find the greatest common divisor of 21 and 780, we list all of the factors of both numbers so we can compare the lists.
When we compared the factors of 21 (1, 3, 7, 21) and 780 (1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780) we found that 3 is the largest factor that they have in common.
Since 3 is the largest common factor of 21 and 780, 3 is also the greatest common divisor of 21 and 780.
Now, we divide both the numerator and denominator in 21/780 by the greatest common divisor as follows:
Numerator: 21/3 = 7
Denominator: 780/3 = 260
Then, we put the numerator and denominator that we are left with back together to get our answer.
21/780 to the simplest form is:
7/260
Simplify 21/781 to the Simplest Form
Go here for the next fraction we simplified to the simplest form.
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