Add 21/60 and 42/98
21/60 + 42/98 is 109/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 98 is 2940
Next, find the equivalent fraction of both fractional numbers with denominator 2940 - For the 1st fraction, since 60 × 49 = 2940,
21/60 = 21 × 49/60 × 49 = 1029/2940 - Likewise, for the 2nd fraction, since 98 × 30 = 2940,
42/98 = 42 × 30/98 × 30 = 1260/2940 - Add the two like fractions:
1029/2940 + 1260/2940 = 1029 + 1260/2940 = 2289/2940 - 2289/2940 simplified gives 109/140
- So, 21/60 + 42/98 = 109/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/60+42/98 21/60+84/98 63/60+42/98