Add 12/9 and 21/49
1st number: 1 3/9, 2nd number: 21/49
12/9 + 21/49 is 37/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 49 is 441
Next, find the equivalent fraction of both fractional numbers with denominator 441 - For the 1st fraction, since 9 × 49 = 441,
12/9 = 12 × 49/9 × 49 = 588/441 - Likewise, for the 2nd fraction, since 49 × 9 = 441,
21/49 = 21 × 9/49 × 9 = 189/441 - Add the two like fractions:
588/441 + 189/441 = 588 + 189/441 = 777/441 - 777/441 simplified gives 37/21
- So, 12/9 + 21/49 = 37/21
In mixed form: 116/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/9+21/49 12/9+42/49 12/18+21/49 12/9+21/98 36/9+21/49 12/9+63/49 12/27+21/49 60/9+21/49 12/45+21/49 84/9+21/49 12/63+21/49