Add 49/28 and 15/21
1st number: 1 21/28, 2nd number: 15/21
49/28 + 15/21 is 69/28.
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,
49/28 = 49 × 3/28 × 3 = 147/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
15/21 = 15 × 4/21 × 4 = 60/84 - Add the two like fractions:
147/84 + 60/84 = 147 + 60/84 = 207/84 - 207/84 simplified gives 69/28
- So, 49/28 + 15/21 = 69/28
In mixed form: 213/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/28+15/21 49/28+30/21 49/56+15/21 49/28+15/42 49/28+45/21 49/84+15/21 49/28+15/63 49/28+75/21