Add 98/21 and 21/20
1st number: 4 14/21, 2nd number: 1 1/20
98/21 + 21/20 is 343/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 21 × 20 = 420,
98/21 = 98 × 20/21 × 20 = 1960/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
21/20 = 21 × 21/20 × 21 = 441/420 - Add the two like fractions:
1960/420 + 441/420 = 1960 + 441/420 = 2401/420 - 2401/420 simplified gives 343/60
- So, 98/21 + 21/20 = 343/60
In mixed form: 543/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/21+42/20 98/42+21/20 98/21+21/40 98/21+63/20 98/63+21/20 98/21+21/60