Add 81/12 and 56/5
1st number: 6 9/12, 2nd number: 11 1/5
81/12 + 56/5 is 359/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 5 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
81/12 = 81 × 5/12 × 5 = 405/60 - Likewise, for the 2nd fraction, since 5 × 12 = 60,
56/5 = 56 × 12/5 × 12 = 672/60 - Add the two like fractions:
405/60 + 672/60 = 405 + 672/60 = 1077/60 - 1077/60 simplified gives 359/20
- So, 81/12 + 56/5 = 359/20
In mixed form: 1719/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/24+56/5 81/12+56/10 81/36+56/5 81/12+56/15 81/60+56/5 81/12+56/25 81/84+56/5 81/12+56/35