Add 1/20 and 14/21
1/20 + 14/21 is 43/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 21 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 20 × 21 = 420,
1/20 = 1 × 21/20 × 21 = 21/420 - Likewise, for the 2nd fraction, since 21 × 20 = 420,
14/21 = 14 × 20/21 × 20 = 280/420 - Add the two like fractions:
21/420 + 280/420 = 21 + 280/420 = 301/420 - 301/420 simplified gives 43/60
- So, 1/20 + 14/21 = 43/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/20+14/21 1/20+28/21 1/40+14/21 1/20+14/42 3/20+14/21 1/20+42/21 1/60+14/21 1/20+14/63 5/20+14/21 1/20+70/21 7/20+14/21 1/20+98/21