Add 15/21 and 7/75
15/21 + 7/75 is 424/525.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 75 is 525
Next, find the equivalent fraction of both fractional numbers with denominator 525 - For the 1st fraction, since 21 × 25 = 525,
15/21 = 15 × 25/21 × 25 = 375/525 - Likewise, for the 2nd fraction, since 75 × 7 = 525,
7/75 = 7 × 7/75 × 7 = 49/525 - Add the two like fractions:
375/525 + 49/525 = 375 + 49/525 = 424/525 - So, 15/21 + 7/75 = 424/525
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/21+7/75 15/21+14/75 15/42+7/75 45/21+7/75 15/21+21/75 15/63+7/75 75/21+7/75 15/21+35/75 15/21+49/75