Add 5/21 and 14/20
5/21 + 14/20 is 197/210.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 21 × 20 = 420,
5/21 = 5 × 20/21 × 20 = 100/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
14/20 = 14 × 21/20 × 21 = 294/420 - Add the two like fractions:
100/420 + 294/420 = 100 + 294/420 = 394/420 - 394/420 simplified gives 197/210
- So, 5/21 + 14/20 = 197/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/21+14/20 5/21+28/20 5/42+14/20 5/21+14/40 15/21+14/20 5/21+42/20 5/63+14/20 5/21+14/60 25/21+14/20 5/21+70/20 35/21+14/20 5/21+98/20