Add 28/15 and 25/30
1st number: 1 13/15, 2nd number: 25/30
28/15 + 25/30 is 27/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 15 × 2 = 30,
28/15 = 28 × 2/15 × 2 = 56/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
25/30 = 25 × 1/30 × 1 = 25/30 - Add the two like fractions:
56/30 + 25/30 = 56 + 25/30 = 81/30 - 81/30 simplified gives 27/10
- So, 28/15 + 25/30 = 27/10
In mixed form: 27/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/15+25/30 28/15+50/30 28/30+25/30 28/15+25/60 84/15+25/30 28/15+75/30 28/45+25/30 28/15+25/90 28/75+25/30