Add 27/63 and 42/49
27/63 + 42/49 is 9/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 49 is 441
Next, find the equivalent fraction of both fractional numbers with denominator 441 - For the 1st fraction, since 63 × 7 = 441,
27/63 = 27 × 7/63 × 7 = 189/441 - Likewise, for the 2nd fraction, since 49 × 9 = 441,
42/49 = 42 × 9/49 × 9 = 378/441 - Add the two like fractions:
189/441 + 378/441 = 189 + 378/441 = 567/441 - 567/441 simplified gives 9/7
- So, 27/63 + 42/49 = 9/7
In mixed form: 12/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/63+42/49 27/63+84/49 27/63+42/98 81/63+42/49