Add 98/21 and 56/70
1st number: 4 14/21, 2nd number: 56/70
98/21 + 56/70 is 82/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
98/21 = 98 × 10/21 × 10 = 980/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
56/70 = 56 × 3/70 × 3 = 168/210 - Add the two like fractions:
980/210 + 168/210 = 980 + 168/210 = 1148/210 - 1148/210 simplified gives 82/15
- So, 98/21 + 56/70 = 82/15
In mixed form: 57/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/42+56/70 98/63+56/70