Add 21/60 and 84/98
21/60 + 84/98 is 169/140.
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,
84/98 = 84 × 30/98 × 30 = 2520/2940 - Add the two like fractions:
1029/2940 + 2520/2940 = 1029 + 2520/2940 = 3549/2940 - 3549/2940 simplified gives 169/140
- So, 21/60 + 84/98 = 169/140
In mixed form: 129/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/60+84/98 63/60+84/98