Add 81/3 and 20/15
1st number: 27 0/3, 2nd number: 1 5/15
81/3 + 20/15 is 85/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 15 is 15
Next, find the equivalent fraction of both fractional numbers with denominator 15 - For the 1st fraction, since 3 × 5 = 15,
81/3 = 81 × 5/3 × 5 = 405/15 - Likewise, for the 2nd fraction, since 15 × 1 = 15,
20/15 = 20 × 1/15 × 1 = 20/15 - Add the two like fractions:
405/15 + 20/15 = 405 + 20/15 = 425/15 - 425/15 simplified gives 85/3
- So, 81/3 + 20/15 = 85/3
In mixed form: 281/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/3+40/15 81/6+20/15 81/3+20/30 81/3+60/15 81/9+20/15 81/3+20/45 81/15+20/15 81/3+20/75 81/21+20/15