Add 27/15 and 81/54
1st number: 1 12/15, 2nd number: 1 27/54
27/15 + 81/54 is 33/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 15 × 18 = 270,
27/15 = 27 × 18/15 × 18 = 486/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
81/54 = 81 × 5/54 × 5 = 405/270 - Add the two like fractions:
486/270 + 405/270 = 486 + 405/270 = 891/270 - 891/270 simplified gives 33/10
- So, 27/15 + 81/54 = 33/10
In mixed form: 33/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/15+81/54 27/30+81/54 81/15+81/54 27/45+81/54 27/75+81/54