Add 15/4 and 81/24
1st number: 3 3/4, 2nd number: 3 9/24
15/4 + 81/24 is 57/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 24 is 24
Next, find the equivalent fraction of both fractional numbers with denominator 24 - For the 1st fraction, since 4 × 6 = 24,
15/4 = 15 × 6/4 × 6 = 90/24 - Likewise, for the 2nd fraction, since 24 × 1 = 24,
81/24 = 81 × 1/24 × 1 = 81/24 - Add the two like fractions:
90/24 + 81/24 = 90 + 81/24 = 171/24 - 171/24 simplified gives 57/8
- So, 15/4 + 81/24 = 57/8
In mixed form: 71/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/4+81/24 15/8+81/24 15/4+81/48 45/4+81/24 15/12+81/24 15/4+81/72 75/4+81/24 15/20+81/24 15/28+81/24