Add 5/21 and 7/25
5/21 + 7/25 is 272/525.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 25 is 525
Next, find the equivalent fraction of both fractional numbers with denominator 525 - For the 1st fraction, since 21 × 25 = 525,
5/21 = 5 × 25/21 × 25 = 125/525 - Likewise, for the 2nd fraction, since 25 × 21 = 525,
7/25 = 7 × 21/25 × 21 = 147/525 - Add the two like fractions:
125/525 + 147/525 = 125 + 147/525 = 272/525 - So, 5/21 + 7/25 = 272/525
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/21+7/25 5/21+14/25 5/42+7/25 5/21+7/50 15/21+7/25 5/21+21/25 5/63+7/25 5/21+7/75 25/21+7/25 5/21+35/25 35/21+7/25 5/21+49/25