Add 15/27 and 36/54
15/27 + 36/54 is 11/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 54 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 27 × 2 = 54,
15/27 = 15 × 2/27 × 2 = 30/54 - Likewise, for the 2nd fraction, since 54 × 1 = 54,
36/54 = 36 × 1/54 × 1 = 36/54 - Add the two like fractions:
30/54 + 36/54 = 30 + 36/54 = 66/54 - 66/54 simplified gives 11/9
- So, 15/27 + 36/54 = 11/9
In mixed form: 12/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/27+36/54 15/27+72/54 15/54+36/54 45/27+36/54 15/81+36/54 75/27+36/54