Add 80/20 and 7/9
1st number: 4 0/20, 2nd number: 7/9
80/20 + 7/9 is 43/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 9 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
80/20 = 80 × 9/20 × 9 = 720/180 - Likewise, for the 2nd fraction, since 9 × 20 = 180,
7/9 = 7 × 20/9 × 20 = 140/180 - Add the two like fractions:
720/180 + 140/180 = 720 + 140/180 = 860/180 - 860/180 simplified gives 43/9
- So, 80/20 + 7/9 = 43/9
In mixed form: 47/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/20+14/9 80/40+7/9 80/20+7/18 80/20+21/9 80/60+7/9 80/20+7/27 80/20+35/9 80/20+7/45 80/20+49/9 80/20+7/63