Add 84/28 and 21/27
1st number: 3 0/28, 2nd number: 21/27
84/28 + 21/27 is 34/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 27 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 28 × 27 = 756,
84/28 = 84 × 27/28 × 27 = 2268/756 - Likewise, for the 2nd fraction, since 27 × 28 = 756,
21/27 = 21 × 28/27 × 28 = 588/756 - Add the two like fractions:
2268/756 + 588/756 = 2268 + 588/756 = 2856/756 - 2856/756 simplified gives 34/9
- So, 84/28 + 21/27 = 34/9
In mixed form: 37/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/28+42/27 84/56+21/27 84/28+21/54 84/28+63/27 84/28+21/81