Add 28/18 and 36/15
1st number: 1 10/18, 2nd number: 2 6/15
28/18 + 36/15 is 178/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 15 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
28/18 = 28 × 5/18 × 5 = 140/90 - Likewise, for the 2nd fraction, since 15 × 6 = 90,
36/15 = 36 × 6/15 × 6 = 216/90 - Add the two like fractions:
140/90 + 216/90 = 140 + 216/90 = 356/90 - 356/90 simplified gives 178/45
- So, 28/18 + 36/15 = 178/45
In mixed form: 343/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/18+36/15 28/18+72/15 28/36+36/15 28/18+36/30 84/18+36/15 28/54+36/15 28/18+36/45 28/90+36/15 28/18+36/75