Subtract 9/14 from 81/20
1st number: 4 1/20, 2nd number: 9/14
81/20 - 9/14 is 477/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 14 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
81/20 = 81 × 7/20 × 7 = 567/140 - Likewise, for the 2nd fraction, since 14 × 10 = 140,
9/14 = 9 × 10/14 × 10 = 90/140 - Subtract the two like fractions:
567/140 - 90/140 = 567 - 90/140 = 477/140 - In mixed form: 357/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/20-18/14 81/40-9/14 81/20-9/28 81/20-27/14 81/60-9/14 81/20-9/42 81/20-45/14 81/20-9/70 81/20-63/14 81/20-9/98