Add 28/15 and 18/36
1st number: 1 13/15, 2nd number: 18/36
28/15 + 18/36 is 71/30.
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,
28/15 = 28 × 12/15 × 12 = 336/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
18/36 = 18 × 5/36 × 5 = 90/180 - Add the two like fractions:
336/180 + 90/180 = 336 + 90/180 = 426/180 - 426/180 simplified gives 71/30
- So, 28/15 + 18/36 = 71/30
In mixed form: 211/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/15+18/36 28/30+18/36 28/15+18/72 84/15+18/36 28/15+54/36 28/45+18/36 28/15+90/36 28/75+18/36