21/42 Simplified

21/42 Simplest Form :

How to simplify 21/42 fraction

To simplify the fraction 21/42, you'll want to find the greatest common divisor (GCD) of the numerator (21) and the denominator (42), and then divide both by that GCD.

1. Find the GCD of 21 and 42:
   

   The factors of 21 are , 1 , 3 , 7 , 21 .
   The factors of 42 are , 1 , 2 , 3 , 6 , 7 , 14 , 21 , 42 .
   The largest number that appears in both lists is 21, so the GCD of 12 and 36 is 21.

2. Divide both the numerator and denominator by the GCD:
   

   21 ÷ 21 = 1
   42 ÷ 21 = 2
   So, the simplified form of 21/42 is 1/2.

The fraction 21/42 is equivalent to 1/2 when simplified.

How to read 21/42

twenty-one over 42

How to read 1/2

one half

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How it Works

Our tool uses advanced algorithms to find the greatest common divisor (GCD) of the numerator and denominator. It then divides both numbers by the GCD to obtain the simplified form.