Add 21/9 and 84/49
1st number: 2 3/9, 2nd number: 1 35/49
21/9 + 84/49 is 85/21.
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,
21/9 = 21 × 49/9 × 49 = 1029/441 - Likewise, for the 2nd fraction, since 49 × 9 = 441,
84/49 = 84 × 9/49 × 9 = 756/441 - Add the two like fractions:
1029/441 + 756/441 = 1029 + 756/441 = 1785/441 - 1785/441 simplified gives 85/21
- So, 21/9 + 84/49 = 85/21
In mixed form: 41/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/9+84/49 21/18+84/49 21/9+84/98 63/9+84/49 21/27+84/49 21/45+84/49 21/63+84/49