Add 5/4 and 81/5
1st number: 1 1/4, 2nd number: 16 1/5
5/4 + 81/5 is 349/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 5 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 4 × 5 = 20,
5/4 = 5 × 5/4 × 5 = 25/20 - Likewise, for the 2nd fraction, since 5 × 4 = 20,
81/5 = 81 × 4/5 × 4 = 324/20 - Add the two like fractions:
25/20 + 324/20 = 25 + 324/20 = 349/20 - So, 5/4 + 81/5 = 349/20
In mixed form: 179/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/4+81/5 5/8+81/5 5/4+81/10 15/4+81/5 5/12+81/5 5/4+81/15 25/4+81/5 5/20+81/5 5/4+81/25 35/4+81/5 5/28+81/5 5/4+81/35