Add 9/21 and 6/14
9/21 + 6/14 is 6/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 14 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 21 × 2 = 42,
9/21 = 9 × 2/21 × 2 = 18/42 - Likewise, for the 2nd fraction, since 14 × 3 = 42,
6/14 = 6 × 3/14 × 3 = 18/42 - Add the two like fractions:
18/42 + 18/42 = 18 + 18/42 = 36/42 - 36/42 simplified gives 6/7
- So, 9/21 + 6/14 = 6/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/21+6/14 9/21+12/14 9/42+6/14 9/21+6/28 27/21+6/14 9/21+18/14 9/63+6/14 9/21+6/42 45/21+6/14 9/21+30/14 9/21+6/70 63/21+6/14 9/21+42/14 9/21+6/98