Add 15/24 and 54/72
15/24 + 54/72 is 11/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 24 × 3 = 72,
15/24 = 15 × 3/24 × 3 = 45/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
54/72 = 54 × 1/72 × 1 = 54/72 - Add the two like fractions:
45/72 + 54/72 = 45 + 54/72 = 99/72 - 99/72 simplified gives 11/8
- So, 15/24 + 54/72 = 11/8
In mixed form: 13/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/24+54/72 15/48+54/72 45/24+54/72 15/72+54/72 75/24+54/72