Add 7/28 and 20/27
7/28 + 20/27 is 107/108.
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,
7/28 = 7 × 27/28 × 27 = 189/756 - Likewise, for the 2nd fraction, since 27 × 28 = 756,
20/27 = 20 × 28/27 × 28 = 560/756 - Add the two like fractions:
189/756 + 560/756 = 189 + 560/756 = 749/756 - 749/756 simplified gives 107/108
- So, 7/28 + 20/27 = 107/108
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/28+20/27 7/28+40/27 7/56+20/27 7/28+20/54 21/28+20/27 7/28+60/27 7/84+20/27 7/28+20/81 35/28+20/27 49/28+20/27