Add 40/21 and 14/20
1st number: 1 19/21, 2nd number: 14/20
40/21 + 14/20 is 547/210.
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,
40/21 = 40 × 20/21 × 20 = 800/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
14/20 = 14 × 21/20 × 21 = 294/420 - Add the two like fractions:
800/420 + 294/420 = 800 + 294/420 = 1094/420 - 1094/420 simplified gives 547/210
- So, 40/21 + 14/20 = 547/210
In mixed form: 2127/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/21+14/20 40/21+28/20 40/42+14/20 40/21+14/40 40/21+42/20 40/63+14/20 40/21+14/60 40/21+70/20 40/21+98/20