Add 18/15 and 28/36
1st number: 1 3/15, 2nd number: 28/36
18/15 + 28/36 is 89/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 15 × 12 = 180,
18/15 = 18 × 12/15 × 12 = 216/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
28/36 = 28 × 5/36 × 5 = 140/180 - Add the two like fractions:
216/180 + 140/180 = 216 + 140/180 = 356/180 - 356/180 simplified gives 89/45
- So, 18/15 + 28/36 = 89/45
In mixed form: 144/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/15+28/36 18/15+56/36 18/30+28/36 18/15+28/72 54/15+28/36 18/15+84/36 18/45+28/36 90/15+28/36 18/75+28/36