Add 3/21 and 28/48
3/21 + 28/48 is 61/84.
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,
3/21 = 3 × 16/21 × 16 = 48/336 - Likewise, for the 2nd fraction, since 48 × 7 = 336,
28/48 = 28 × 7/48 × 7 = 196/336 - Add the two like fractions:
48/336 + 196/336 = 48 + 196/336 = 244/336 - 244/336 simplified gives 61/84
- So, 3/21 + 28/48 = 61/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/21+28/48 3/21+56/48 3/42+28/48 3/21+28/96 9/21+28/48 3/21+84/48 3/63+28/48 15/21+28/48