Add 12/9 and 84/28
1st number: 1 3/9, 2nd number: 3 0/28
12/9 + 84/28 is 13/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 28 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 9 × 28 = 252,
12/9 = 12 × 28/9 × 28 = 336/252 - Likewise, for the 2nd fraction, since 28 × 9 = 252,
84/28 = 84 × 9/28 × 9 = 756/252 - Add the two like fractions:
336/252 + 756/252 = 336 + 756/252 = 1092/252 - 1092/252 simplified gives 13/3
- So, 12/9 + 84/28 = 13/3
In mixed form: 41/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/9+84/28 12/18+84/28 12/9+84/56 36/9+84/28 12/27+84/28 60/9+84/28 12/45+84/28 84/9+84/28 12/63+84/28