Add 80/9 and 12/18
1st number: 8 8/9, 2nd number: 12/18
80/9 + 12/18 is 86/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 18 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 9 × 2 = 18,
80/9 = 80 × 2/9 × 2 = 160/18 - Likewise, for the 2nd fraction, since 18 × 1 = 18,
12/18 = 12 × 1/18 × 1 = 12/18 - Add the two like fractions:
160/18 + 12/18 = 160 + 12/18 = 172/18 - 172/18 simplified gives 86/9
- So, 80/9 + 12/18 = 86/9
In mixed form: 95/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/9+24/18 80/18+12/18 80/9+12/36 80/9+36/18 80/27+12/18 80/9+12/54 80/9+60/18 80/45+12/18 80/9+12/90 80/9+84/18 80/63+12/18