Add 7/21 and 35/56
7/21 + 35/56 is 23/24.
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,
7/21 = 7 × 8/21 × 8 = 56/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
35/56 = 35 × 3/56 × 3 = 105/168 - Add the two like fractions:
56/168 + 105/168 = 56 + 105/168 = 161/168 - 161/168 simplified gives 23/24
- So, 7/21 + 35/56 = 23/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/21+35/56 7/21+70/56 7/42+35/56 7/63+35/56 35/21+35/56 49/21+35/56