Add 15/21 and 7/48
15/21 + 7/48 is 289/336.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 48 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 21 × 16 = 336,
15/21 = 15 × 16/21 × 16 = 240/336 - Likewise, for the 2nd fraction, since 48 × 7 = 336,
7/48 = 7 × 7/48 × 7 = 49/336 - Add the two like fractions:
240/336 + 49/336 = 240 + 49/336 = 289/336 - So, 15/21 + 7/48 = 289/336
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/21+7/48 15/21+14/48 15/42+7/48 15/21+7/96 45/21+7/48 15/21+21/48 15/63+7/48 75/21+7/48 15/21+35/48 15/21+49/48