To simplify the fraction 21/91, you'll want to find the greatest common divisor (GCD) of the numerator (21) and the denominator (91), and then divide both by that GCD.
The factors of 21 are , 1 , 3 , 7 , 21 .
The factors of 91 are , 1 , 7 , 13 , 91 .
The largest number that appears in both lists is 7, so the GCD of 12 and 36 is 7.
21 ÷ 7 = 3
91 ÷ 7 = 13
So, the simplified form of 21/91 is 3/13.
The fraction 21/91 is equivalent to 3/13 when simplified.
twenty-one over 91
three over 13
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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.