Subtract 5/28 from 21/9
1st number: 2 3/9, 2nd number: 5/28
21/9 - 5/28 is 181/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 28 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 9 × 28 = 252,
21/9 = 21 × 28/9 × 28 = 588/252 - Likewise, for the 2nd fraction, since 28 × 9 = 252,
5/28 = 5 × 9/28 × 9 = 45/252 - Subtract the two like fractions:
588/252 - 45/252 = 588 - 45/252 = 543/252 - After reducing the fraction, the answer is 181/84
- In mixed form: 213/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/9-5/28 21/9-10/28 21/18-5/28 21/9-5/56 63/9-5/28 21/9-15/28 21/27-5/28 21/9-5/84 21/9-25/28 21/45-5/28 21/9-35/28 21/63-5/28