Add 5/28 and 15/20
5/28 + 15/20 is 13/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
5/28 = 5 × 5/28 × 5 = 25/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
15/20 = 15 × 7/20 × 7 = 105/140 - Add the two like fractions:
25/140 + 105/140 = 25 + 105/140 = 130/140 - 130/140 simplified gives 13/14
- So, 5/28 + 15/20 = 13/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/28+15/20 5/28+30/20 5/56+15/20 5/28+15/40 15/28+15/20 5/28+45/20 5/84+15/20 5/28+15/60 25/28+15/20 5/28+75/20 35/28+15/20