Add 21/9 and 45/49
1st number: 2 3/9, 2nd number: 45/49
21/9 + 45/49 is 478/147.
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,
45/49 = 45 × 9/49 × 9 = 405/441 - Add the two like fractions:
1029/441 + 405/441 = 1029 + 405/441 = 1434/441 - 1434/441 simplified gives 478/147
- So, 21/9 + 45/49 = 478/147
In mixed form: 337/147
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/9+45/49 21/9+90/49 21/18+45/49 21/9+45/98 63/9+45/49 21/27+45/49 21/45+45/49 21/63+45/49