Subtract 21/28 from 72/14
1st number: 5 2/14, 2nd number: 21/28
72/14 - 21/28 is 123/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 28 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 14 × 2 = 28,
72/14 = 72 × 2/14 × 2 = 144/28 - Likewise, for the 2nd fraction, since 28 × 1 = 28,
21/28 = 21 × 1/28 × 1 = 21/28 - Subtract the two like fractions:
144/28 - 21/28 = 144 - 21/28 = 123/28 - In mixed form: 411/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/14-42/28 72/28-21/28 72/14-21/56 72/14-63/28 72/42-21/28 72/14-21/84 72/70-21/28 72/98-21/28