Add 4/21 and 7/24
4/21 + 7/24 is 27/56.
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,
4/21 = 4 × 8/21 × 8 = 32/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
7/24 = 7 × 7/24 × 7 = 49/168 - Add the two like fractions:
32/168 + 49/168 = 32 + 49/168 = 81/168 - 81/168 simplified gives 27/56
- So, 4/21 + 7/24 = 27/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/21+7/24 4/21+14/24 4/42+7/24 4/21+7/48 12/21+7/24 4/21+21/24 4/63+7/24 4/21+7/72 20/21+7/24 4/21+35/24 28/21+7/24 4/21+49/24