Add 8/21 and 21/48
8/21 + 21/48 is 275/336.
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,
8/21 = 8 × 16/21 × 16 = 128/336 - Likewise, for the 2nd fraction, since 48 × 7 = 336,
21/48 = 21 × 7/48 × 7 = 147/336 - Add the two like fractions:
128/336 + 147/336 = 128 + 147/336 = 275/336 - So, 8/21 + 21/48 = 275/336
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/21+21/48 8/21+42/48 8/42+21/48 8/21+21/96 24/21+21/48 8/21+63/48 8/63+21/48 40/21+21/48 56/21+21/48