Subtract 8/10 from 81/28
1st number: 2 25/28, 2nd number: 8/10
81/28 - 8/10 is 293/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 10 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
81/28 = 81 × 5/28 × 5 = 405/140 - Likewise, for the 2nd fraction, since 10 × 14 = 140,
8/10 = 8 × 14/10 × 14 = 112/140 - Subtract the two like fractions:
405/140 - 112/140 = 405 - 112/140 = 293/140 - In mixed form: 213/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/28-16/10 81/56-8/10 81/28-8/20 81/28-24/10 81/84-8/10 81/28-8/30 81/28-40/10 81/28-8/50 81/28-56/10 81/28-8/70