To simplify the fraction 21/63, you'll want to find the greatest common divisor (GCD) of the numerator (21) and the denominator (63), and then divide both by that GCD.
The factors of 21 are , 1 , 3 , 7 , 21 .
The factors of 63 are , 1 , 3 , 7 , 9 , 21 , 63 .
The largest number that appears in both lists is 21, so the GCD of 12 and 36 is 21.
21 ÷ 21 = 1
63 ÷ 21 = 3
So, the simplified form of 21/63 is 1/3.
The fraction 21/63 is equivalent to 1/3 when simplified.
twenty-one over 63
one third
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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.