Add 42/49 and 3/9
42/49 + 3/9 is 25/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 9 is 441
Next, find the equivalent fraction of both fractional numbers with denominator 441 - For the 1st fraction, since 49 × 9 = 441,
42/49 = 42 × 9/49 × 9 = 378/441 - Likewise, for the 2nd fraction, since 9 × 49 = 441,
3/9 = 3 × 49/9 × 49 = 147/441 - Add the two like fractions:
378/441 + 147/441 = 378 + 147/441 = 525/441 - 525/441 simplified gives 25/21
- So, 42/49 + 3/9 = 25/21
In mixed form: 14/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/49+3/9 42/49+6/9 42/98+3/9 42/49+3/18 42/49+3/27 42/49+15/9 42/49+3/45 42/49+21/9 42/49+3/63