Add 15/27 and 3/18
15/27 + 3/18 is 13/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 18 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 18 × 3 = 54,
3/18 = 3 × 3/18 × 3 = 9/54 - Add the two like fractions:
30/54 + 9/54 = 30 + 9/54 = 39/54 - 39/54 simplified gives 13/18
- So, 15/27 + 3/18 = 13/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/27+3/18 15/27+6/18 15/54+3/18 15/27+3/36 45/27+3/18 15/27+9/18 15/81+3/18 15/27+3/54 75/27+3/18 15/27+15/18 15/27+3/90 15/27+21/18