Add 90/56 and 21/24
1st number: 1 34/56, 2nd number: 21/24
90/56 + 21/24 is 139/56.
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,
90/56 = 90 × 3/56 × 3 = 270/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
21/24 = 21 × 7/24 × 7 = 147/168 - Add the two like fractions:
270/168 + 147/168 = 270 + 147/168 = 417/168 - 417/168 simplified gives 139/56
- So, 90/56 + 21/24 = 139/56
In mixed form: 227/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/56+42/24 90/56+21/48 90/56+63/24 90/56+21/72