Add 6/21 and 8/14
6/21 + 8/14 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,
6/21 = 6 × 2/21 × 2 = 12/42 - Likewise, for the 2nd fraction, since 14 × 3 = 42,
8/14 = 8 × 3/14 × 3 = 24/42 - Add the two like fractions:
12/42 + 24/42 = 12 + 24/42 = 36/42 - 36/42 simplified gives 6/7
- So, 6/21 + 8/14 = 6/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/21+8/14 6/21+16/14 6/42+8/14 6/21+8/28 18/21+8/14 6/21+24/14 6/63+8/14 6/21+8/42 30/21+8/14 6/21+40/14 6/21+8/70 42/21+8/14 6/21+56/14 6/21+8/98