Add 18/15 and 28/30
1st number: 1 3/15, 2nd number: 28/30
18/15 + 28/30 is 32/15.
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,
18/15 = 18 × 2/15 × 2 = 36/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
28/30 = 28 × 1/30 × 1 = 28/30 - Add the two like fractions:
36/30 + 28/30 = 36 + 28/30 = 64/30 - 64/30 simplified gives 32/15
- So, 18/15 + 28/30 = 32/15
In mixed form: 22/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/15+28/30 18/15+56/30 18/30+28/30 18/15+28/60 54/15+28/30 18/15+84/30 18/45+28/30 18/15+28/90 90/15+28/30 18/75+28/30