Add 81/24 and 63/20
1st number: 3 9/24, 2nd number: 3 3/20
81/24 + 63/20 is 261/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 20 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 24 × 5 = 120,
81/24 = 81 × 5/24 × 5 = 405/120 - Likewise, for the 2nd fraction, since 20 × 6 = 120,
63/20 = 63 × 6/20 × 6 = 378/120 - Add the two like fractions:
405/120 + 378/120 = 405 + 378/120 = 783/120 - 783/120 simplified gives 261/40
- So, 81/24 + 63/20 = 261/40
In mixed form: 621/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/48+63/20 81/24+63/40 81/72+63/20 81/24+63/60