Add 28/5 and 81/70
1st number: 5 3/5, 2nd number: 1 11/70
28/5 + 81/70 is 473/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 5 × 14 = 70,
28/5 = 28 × 14/5 × 14 = 392/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
81/70 = 81 × 1/70 × 1 = 81/70 - Add the two like fractions:
392/70 + 81/70 = 392 + 81/70 = 473/70 - So, 28/5 + 81/70 = 473/70
In mixed form: 653/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/5+81/70 28/10+81/70 84/5+81/70 28/15+81/70 28/25+81/70 28/35+81/70