Subtract 2/9 from 81/28
1st number: 2 25/28, 2nd number: 2/9
81/28 - 2/9 is 673/252.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 9 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 28 × 9 = 252,
81/28 = 81 × 9/28 × 9 = 729/252 - Likewise, for the 2nd fraction, since 9 × 28 = 252,
2/9 = 2 × 28/9 × 28 = 56/252 - Subtract the two like fractions:
729/252 - 56/252 = 729 - 56/252 = 673/252 - In mixed form: 2169/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/28-4/9 81/56-2/9 81/28-2/18 81/28-6/9 81/84-2/9 81/28-2/27 81/28-10/9 81/28-2/45 81/28-14/9 81/28-2/63