Add 6/9 and 80/84
6/9 + 80/84 is 34/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 84 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 9 × 28 = 252,
6/9 = 6 × 28/9 × 28 = 168/252 - Likewise, for the 2nd fraction, since 84 × 3 = 252,
80/84 = 80 × 3/84 × 3 = 240/252 - Add the two like fractions:
168/252 + 240/252 = 168 + 240/252 = 408/252 - 408/252 simplified gives 34/21
- So, 6/9 + 80/84 = 34/21
In mixed form: 113/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/9+80/84 6/18+80/84 18/9+80/84 6/27+80/84 30/9+80/84 6/45+80/84 42/9+80/84 6/63+80/84