Add 21/28 and 3/48
21/28 + 3/48 is 13/16.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 48 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 28 × 12 = 336,
21/28 = 21 × 12/28 × 12 = 252/336 - Likewise, for the 2nd fraction, since 48 × 7 = 336,
3/48 = 3 × 7/48 × 7 = 21/336 - Add the two like fractions:
252/336 + 21/336 = 252 + 21/336 = 273/336 - 273/336 simplified gives 13/16
- So, 21/28 + 3/48 = 13/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/28+3/48 21/28+6/48 21/56+3/48 21/28+3/96 63/28+3/48 21/28+9/48 21/84+3/48 21/28+15/48 21/28+21/48