Subtract 3/60 from 40/21
1st number: 1 19/21, 2nd number: 3/60
40/21 - 3/60 is 779/420.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 21 × 20 = 420,
40/21 = 40 × 20/21 × 20 = 800/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
3/60 = 3 × 7/60 × 7 = 21/420 - Subtract the two like fractions:
800/420 - 21/420 = 800 - 21/420 = 779/420 - In mixed form: 1359/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/21-3/60 40/21-6/60 40/42-3/60 40/21-9/60 40/63-3/60 40/21-15/60 40/21-21/60