Add 70/60 and 21/98
1st number: 1 10/60, 2nd number: 21/98
70/60 + 21/98 is 29/21.
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,
70/60 = 70 × 49/60 × 49 = 3430/2940 - Likewise, for the 2nd fraction, since 98 × 30 = 2940,
21/98 = 21 × 30/98 × 30 = 630/2940 - Add the two like fractions:
3430/2940 + 630/2940 = 3430 + 630/2940 = 4060/2940 - 4060/2940 simplified gives 29/21
- So, 70/60 + 21/98 = 29/21
In mixed form: 18/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/60+42/98 70/60+63/98