Add 2/5 and 81/7
1st number: 2/5, 2nd number: 11 4/7
2/5 + 81/7 is 419/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 7 is 35
Next, find the equivalent fraction of both fractional numbers with denominator 35 - For the 1st fraction, since 5 × 7 = 35,
2/5 = 2 × 7/5 × 7 = 14/35 - Likewise, for the 2nd fraction, since 7 × 5 = 35,
81/7 = 81 × 5/7 × 5 = 405/35 - Add the two like fractions:
14/35 + 405/35 = 14 + 405/35 = 419/35 - So, 2/5 + 81/7 = 419/35
In mixed form: 1134/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/5+81/7 2/10+81/7 2/5+81/14 6/5+81/7 2/15+81/7 2/5+81/21 10/5+81/7 2/25+81/7 2/5+81/35 14/5+81/7 2/35+81/7 2/5+81/49