Add 56/15 and 28/18
1st number: 3 11/15, 2nd number: 1 10/18
56/15 + 28/18 is 238/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 15 × 6 = 90,
56/15 = 56 × 6/15 × 6 = 336/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
28/18 = 28 × 5/18 × 5 = 140/90 - Add the two like fractions:
336/90 + 140/90 = 336 + 140/90 = 476/90 - 476/90 simplified gives 238/45
- So, 56/15 + 28/18 = 238/45
In mixed form: 513/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/15+56/18 56/30+28/18 56/15+28/36 56/15+84/18 56/45+28/18 56/15+28/54 56/75+28/18 56/15+28/90