Add 7/15 and 21/49
7/15 + 21/49 is 94/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 49 is 735
Next, find the equivalent fraction of both fractional numbers with denominator 735 - For the 1st fraction, since 15 × 49 = 735,
7/15 = 7 × 49/15 × 49 = 343/735 - Likewise, for the 2nd fraction, since 49 × 15 = 735,
21/49 = 21 × 15/49 × 15 = 315/735 - Add the two like fractions:
343/735 + 315/735 = 343 + 315/735 = 658/735 - 658/735 simplified gives 94/105
- So, 7/15 + 21/49 = 94/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/15+21/49 7/15+42/49 7/30+21/49 7/15+21/98 21/15+21/49 7/15+63/49 7/45+21/49 35/15+21/49 7/75+21/49 49/15+21/49