Subtract 2/18 from 81/28
1st number: 2 25/28, 2nd number: 2/18
81/28 - 2/18 is 701/252.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 18 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 18 × 14 = 252,
2/18 = 2 × 14/18 × 14 = 28/252 - Subtract the two like fractions:
729/252 - 28/252 = 729 - 28/252 = 701/252 - In mixed form: 2197/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/28-4/18 81/56-2/18 81/28-2/36 81/28-6/18 81/84-2/18 81/28-2/54 81/28-10/18 81/28-2/90 81/28-14/18