Add 72/56 and 21/24
1st number: 1 16/56, 2nd number: 21/24
72/56 + 21/24 is 121/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 24 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 56 × 3 = 168,
72/56 = 72 × 3/56 × 3 = 216/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
21/24 = 21 × 7/24 × 7 = 147/168 - Add the two like fractions:
216/168 + 147/168 = 216 + 147/168 = 363/168 - 363/168 simplified gives 121/56
- So, 72/56 + 21/24 = 121/56
In mixed form: 29/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/56+42/24 72/56+21/48 72/56+63/24 72/56+21/72