Add 5/21 and 7/24
5/21 + 7/24 is 89/168.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 24 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
5/21 = 5 × 8/21 × 8 = 40/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
7/24 = 7 × 7/24 × 7 = 49/168 - Add the two like fractions:
40/168 + 49/168 = 40 + 49/168 = 89/168 - So, 5/21 + 7/24 = 89/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/21+7/24 5/21+14/24 5/42+7/24 5/21+7/48 15/21+7/24 5/21+21/24 5/63+7/24 5/21+7/72 25/21+7/24 5/21+35/24 35/21+7/24 5/21+49/24