Add 15/27 and 28/56
15/27 + 28/56 is 19/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 56 is 1512
Next, find the equivalent fraction of both fractional numbers with denominator 1512 - For the 1st fraction, since 27 × 56 = 1512,
15/27 = 15 × 56/27 × 56 = 840/1512 - Likewise, for the 2nd fraction, since 56 × 27 = 1512,
28/56 = 28 × 27/56 × 27 = 756/1512 - Add the two like fractions:
840/1512 + 756/1512 = 840 + 756/1512 = 1596/1512 - 1596/1512 simplified gives 19/18
- So, 15/27 + 28/56 = 19/18
In mixed form: 11/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/27+28/56 15/54+28/56 45/27+28/56 15/27+84/56 15/81+28/56 75/27+28/56