Add 27/4 and 81/80
1st number: 6 3/4, 2nd number: 1 1/80
27/4 + 81/80 is 621/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 4 × 20 = 80,
27/4 = 27 × 20/4 × 20 = 540/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
81/80 = 81 × 1/80 × 1 = 81/80 - Add the two like fractions:
540/80 + 81/80 = 540 + 81/80 = 621/80 - So, 27/4 + 81/80 = 621/80
In mixed form: 761/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/4+81/80 27/8+81/80 81/4+81/80 27/12+81/80 27/20+81/80 27/28+81/80