Add 80/9 and 42/5
1st number: 8 8/9, 2nd number: 8 2/5
80/9 + 42/5 is 778/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 5 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 9 × 5 = 45,
80/9 = 80 × 5/9 × 5 = 400/45 - Likewise, for the 2nd fraction, since 5 × 9 = 45,
42/5 = 42 × 9/5 × 9 = 378/45 - Add the two like fractions:
400/45 + 378/45 = 400 + 378/45 = 778/45 - So, 80/9 + 42/5 = 778/45
In mixed form: 1713/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/9+84/5 80/18+42/5 80/9+42/10 80/27+42/5 80/9+42/15 80/45+42/5 80/9+42/25 80/63+42/5 80/9+42/35