Add 21/81 and 60/24
1st number: 21/81, 2nd number: 2 12/24
21/81 + 60/24 is 149/54.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 24 is 648
Next, find the equivalent fraction of both fractional numbers with denominator 648 - For the 1st fraction, since 81 × 8 = 648,
21/81 = 21 × 8/81 × 8 = 168/648 - Likewise, for the 2nd fraction, since 24 × 27 = 648,
60/24 = 60 × 27/24 × 27 = 1620/648 - Add the two like fractions:
168/648 + 1620/648 = 168 + 1620/648 = 1788/648 - 1788/648 simplified gives 149/54
- So, 21/81 + 60/24 = 149/54
In mixed form: 241/54
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/81+60/24 21/81+60/48 63/81+60/24 21/81+60/72