Add 21/24 and 9/56
21/24 + 9/56 is 29/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 56 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 24 × 7 = 168,
21/24 = 21 × 7/24 × 7 = 147/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
9/56 = 9 × 3/56 × 3 = 27/168 - Add the two like fractions:
147/168 + 27/168 = 147 + 27/168 = 174/168 - 174/168 simplified gives 29/28
- So, 21/24 + 9/56 = 29/28
In mixed form: 11/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/24+9/56 21/24+18/56 21/48+9/56 63/24+9/56 21/24+27/56 21/72+9/56 21/24+45/56 21/24+63/56