Add 42/98 and 27/21
1st number: 42/98, 2nd number: 1 6/21
42/98 + 27/21 is 12/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 21 is 294
Next, find the equivalent fraction of both fractional numbers with denominator 294 - For the 1st fraction, since 98 × 3 = 294,
42/98 = 42 × 3/98 × 3 = 126/294 - Likewise, for the 2nd fraction, since 21 × 14 = 294,
27/21 = 27 × 14/21 × 14 = 378/294 - Add the two like fractions:
126/294 + 378/294 = 126 + 378/294 = 504/294 - 504/294 simplified gives 12/7
- So, 42/98 + 27/21 = 12/7
In mixed form: 15/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/98+27/21 42/98+54/21 42/98+27/42 42/98+81/21 42/98+27/63