Add 21/28 and 60/54
1st number: 21/28, 2nd number: 1 6/54
21/28 + 60/54 is 67/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 54 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 28 × 27 = 756,
21/28 = 21 × 27/28 × 27 = 567/756 - Likewise, for the 2nd fraction, since 54 × 14 = 756,
60/54 = 60 × 14/54 × 14 = 840/756 - Add the two like fractions:
567/756 + 840/756 = 567 + 840/756 = 1407/756 - 1407/756 simplified gives 67/36
- So, 21/28 + 60/54 = 67/36
In mixed form: 131/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/28+60/54 21/56+60/54 63/28+60/54 21/84+60/54