Subtract 81/9 from 25/28
1st number: 25/28, 2nd number: 9 0/9
25/28 - 81/9 is -227/28.
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,
25/28 = 25 × 9/28 × 9 = 225/252 - Likewise, for the 2nd fraction, since 9 × 28 = 252,
81/9 = 81 × 28/9 × 28 = 2268/252 - Subtract the two like fractions:
225/252 - 2268/252 = 225 - 2268/252 = -2043/252 - After reducing the fraction, the answer is -227/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/28-81/9 25/56-81/9 25/28-81/18 75/28-81/9 25/84-81/9 25/28-81/27 25/28-81/45 25/28-81/63