Add 10/15 and 35/28
1st number: 10/15, 2nd number: 1 7/28
10/15 + 35/28 is 23/12.
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,
10/15 = 10 × 28/15 × 28 = 280/420 - Likewise, for the 2nd fraction, since 28 × 15 = 420,
35/28 = 35 × 15/28 × 15 = 525/420 - Add the two like fractions:
280/420 + 525/420 = 280 + 525/420 = 805/420 - 805/420 simplified gives 23/12
- So, 10/15 + 35/28 = 23/12
In mixed form: 111/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/15+35/28 10/15+70/28 10/30+35/28 10/15+35/56 30/15+35/28 10/45+35/28 10/15+35/84 50/15+35/28 10/75+35/28 70/15+35/28