Add 30/21 and 6/30
1st number: 1 9/21, 2nd number: 6/30
30/21 + 6/30 is 57/35.
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,
6/30 = 6 × 7/30 × 7 = 42/210 - Add the two like fractions:
300/210 + 42/210 = 300 + 42/210 = 342/210 - 342/210 simplified gives 57/35
- So, 30/21 + 6/30 = 57/35
In mixed form: 122/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/21+6/30 30/21+12/30 30/42+6/30 30/21+6/60 90/21+6/30 30/21+18/30 30/63+6/30 30/21+6/90 30/21+42/30