Add 20/21 and 56/24
1st number: 20/21, 2nd number: 2 8/24
20/21 + 56/24 is 23/7.
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,
20/21 = 20 × 8/21 × 8 = 160/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
56/24 = 56 × 7/24 × 7 = 392/168 - Add the two like fractions:
160/168 + 392/168 = 160 + 392/168 = 552/168 - 552/168 simplified gives 23/7
- So, 20/21 + 56/24 = 23/7
In mixed form: 32/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/21+56/24 20/42+56/24 20/21+56/48 60/21+56/24 20/63+56/24 20/21+56/72