Add 81/20 and 4/5
1st number: 4 1/20, 2nd number: 4/5
81/20 + 4/5 is 97/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 5 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 20 × 1 = 20,
81/20 = 81 × 1/20 × 1 = 81/20 - Likewise, for the 2nd fraction, since 5 × 4 = 20,
4/5 = 4 × 4/5 × 4 = 16/20 - Add the two like fractions:
81/20 + 16/20 = 81 + 16/20 = 97/20 - So, 81/20 + 4/5 = 97/20
In mixed form: 417/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/20+8/5 81/40+4/5 81/20+4/10 81/20+12/5 81/60+4/5 81/20+4/15 81/20+20/5 81/20+4/25 81/20+28/5 81/20+4/35