Add 20/21 and 5/56
20/21 + 5/56 is 25/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 56 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 56 × 3 = 168,
5/56 = 5 × 3/56 × 3 = 15/168 - Add the two like fractions:
160/168 + 15/168 = 160 + 15/168 = 175/168 - 175/168 simplified gives 25/24
- So, 20/21 + 5/56 = 25/24
In mixed form: 11/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/21+5/56 20/21+10/56 20/42+5/56 60/21+5/56 20/21+15/56 20/63+5/56 20/21+25/56 20/21+35/56