Add 5/15 and 27/40
5/15 + 27/40 is 121/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 15 × 8 = 120,
5/15 = 5 × 8/15 × 8 = 40/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
27/40 = 27 × 3/40 × 3 = 81/120 - Add the two like fractions:
40/120 + 81/120 = 40 + 81/120 = 121/120 - So, 5/15 + 27/40 = 121/120
In mixed form: 11/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/15+27/40 5/15+54/40 5/30+27/40 5/15+27/80 5/15+81/40 5/45+27/40 25/15+27/40 5/75+27/40 35/15+27/40