Subtract 63/21 from 21/5
1st number: 4 1/5, 2nd number: 3 0/21
21/5 - 63/21 is 6/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 21 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 5 × 21 = 105,
21/5 = 21 × 21/5 × 21 = 441/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
63/21 = 63 × 5/21 × 5 = 315/105 - Subtract the two like fractions:
441/105 - 315/105 = 441 - 315/105 = 126/105 - After reducing the fraction, the answer is 6/5
- In mixed form: 11/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/5-63/21 21/10-63/21 21/5-63/42 63/5-63/21 21/15-63/21 21/25-63/21 21/35-63/21