Subtract 63/60 from 21/7
1st number: 3 0/7, 2nd number: 1 3/60
21/7 - 63/60 is 39/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 7 × 60 = 420,
21/7 = 21 × 60/7 × 60 = 1260/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
63/60 = 63 × 7/60 × 7 = 441/420 - Subtract the two like fractions:
1260/420 - 441/420 = 1260 - 441/420 = 819/420 - After reducing the fraction, the answer is 39/20
- In mixed form: 119/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/7-63/60 21/14-63/60 63/7-63/60 21/35-63/60 21/49-63/60