Add 2/21 and 6/30
2/21 + 6/30 is 31/105.
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,
2/21 = 2 × 10/21 × 10 = 20/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
6/30 = 6 × 7/30 × 7 = 42/210 - Add the two like fractions:
20/210 + 42/210 = 20 + 42/210 = 62/210 - 62/210 simplified gives 31/105
- So, 2/21 + 6/30 = 31/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/21+6/30 2/21+12/30 2/42+6/30 2/21+6/60 6/21+6/30 2/21+18/30 2/63+6/30 2/21+6/90 10/21+6/30 14/21+6/30 2/21+42/30