Add 80/9 and 20/45
1st number: 8 8/9, 2nd number: 20/45
80/9 + 20/45 is 28/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 45 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 45 × 1 = 45,
20/45 = 20 × 1/45 × 1 = 20/45 - Add the two like fractions:
400/45 + 20/45 = 400 + 20/45 = 420/45 - 420/45 simplified gives 28/3
- So, 80/9 + 20/45 = 28/3
In mixed form: 91/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/9+40/45 80/18+20/45 80/9+20/90 80/9+60/45 80/27+20/45 80/45+20/45 80/63+20/45