Subtract 3/40 from 60/21
1st number: 2 18/21, 2nd number: 3/40
60/21 - 3/40 is 779/280.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 21 × 40 = 840,
60/21 = 60 × 40/21 × 40 = 2400/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
3/40 = 3 × 21/40 × 21 = 63/840 - Subtract the two like fractions:
2400/840 - 63/840 = 2400 - 63/840 = 2337/840 - After reducing the fraction, the answer is 779/280
- In mixed form: 2219/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/21-6/40 60/42-3/40 60/21-3/80 60/21-9/40 60/63-3/40 60/21-15/40 60/21-21/40