Add 9/84 and 12/9
1st number: 9/84, 2nd number: 1 3/9
9/84 + 12/9 is 121/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 9 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
9/84 = 9 × 3/84 × 3 = 27/252 - Likewise, for the 2nd fraction, since 9 × 28 = 252,
12/9 = 12 × 28/9 × 28 = 336/252 - Add the two like fractions:
27/252 + 336/252 = 27 + 336/252 = 363/252 - 363/252 simplified gives 121/84
- So, 9/84 + 12/9 = 121/84
In mixed form: 137/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/84+12/9 9/84+24/9 9/84+12/18 27/84+12/9 9/84+36/9 9/84+12/27 45/84+12/9 9/84+60/9 9/84+12/45 63/84+12/9 9/84+84/9 9/84+12/63