Add 2/28 and 15/21
2/28 + 15/21 is 11/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 28 × 3 = 84,
2/28 = 2 × 3/28 × 3 = 6/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
15/21 = 15 × 4/21 × 4 = 60/84 - Add the two like fractions:
6/84 + 60/84 = 6 + 60/84 = 66/84 - 66/84 simplified gives 11/14
- So, 2/28 + 15/21 = 11/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/28+15/21 2/28+30/21 2/56+15/21 2/28+15/42 6/28+15/21 2/28+45/21 2/84+15/21 2/28+15/63 10/28+15/21 2/28+75/21 14/28+15/21