Add 30/21 and 98/30
1st number: 1 9/21, 2nd number: 3 8/30
30/21 + 98/30 is 493/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
30/21 = 30 × 10/21 × 10 = 300/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
98/30 = 98 × 7/30 × 7 = 686/210 - Add the two like fractions:
300/210 + 686/210 = 300 + 686/210 = 986/210 - 986/210 simplified gives 493/105
- So, 30/21 + 98/30 = 493/105
In mixed form: 473/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/21+98/30 30/42+98/30 30/21+98/60 90/21+98/30 30/63+98/30 30/21+98/90