Add 84/8 and 80/9
1st number: 10 4/8, 2nd number: 8 8/9
84/8 + 80/9 is 349/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 9 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 8 × 9 = 72,
84/8 = 84 × 9/8 × 9 = 756/72 - Likewise, for the 2nd fraction, since 9 × 8 = 72,
80/9 = 80 × 8/9 × 8 = 640/72 - Add the two like fractions:
756/72 + 640/72 = 756 + 640/72 = 1396/72 - 1396/72 simplified gives 349/18
- So, 84/8 + 80/9 = 349/18
In mixed form: 197/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/16+80/9 84/8+80/18 84/24+80/9 84/8+80/27 84/40+80/9 84/8+80/45 84/56+80/9 84/8+80/63