Add 20/7 and 21/56
1st number: 2 6/7, 2nd number: 21/56
20/7 + 21/56 is 181/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 56 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 7 × 8 = 56,
20/7 = 20 × 8/7 × 8 = 160/56 - Likewise, for the 2nd fraction, since 56 × 1 = 56,
21/56 = 21 × 1/56 × 1 = 21/56 - Add the two like fractions:
160/56 + 21/56 = 160 + 21/56 = 181/56 - So, 20/7 + 21/56 = 181/56
In mixed form: 313/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/7+21/56 20/7+42/56 20/14+21/56 60/7+21/56 20/7+63/56 20/21+21/56 20/35+21/56 20/49+21/56