Add 5/15 and 1/28
5/15 + 1/28 is 31/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 28 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 15 × 28 = 420,
5/15 = 5 × 28/15 × 28 = 140/420 - Likewise, for the 2nd fraction, since 28 × 15 = 420,
1/28 = 1 × 15/28 × 15 = 15/420 - Add the two like fractions:
140/420 + 15/420 = 140 + 15/420 = 155/420 - 155/420 simplified gives 31/84
- So, 5/15 + 1/28 = 31/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/15+1/28 5/15+2/28 5/30+1/28 5/15+1/56 5/15+3/28 5/45+1/28 5/15+1/84 25/15+1/28 5/15+5/28 5/75+1/28 35/15+1/28 5/15+7/28