Subtract 3/20 from 50/7
1st number: 7 1/7, 2nd number: 3/20
50/7 - 3/20 is 979/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 7 × 20 = 140,
50/7 = 50 × 20/7 × 20 = 1000/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
3/20 = 3 × 7/20 × 7 = 21/140 - Subtract the two like fractions:
1000/140 - 21/140 = 1000 - 21/140 = 979/140 - In mixed form: 6139/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/7-6/20 50/14-3/20 50/7-3/40 50/7-9/20 50/21-3/20 50/7-3/60 50/7-15/20 50/35-3/20 50/7-21/20 50/49-3/20