Add 80/60 and 14/21
1st number: 1 20/60, 2nd number: 14/21
80/60 + 14/21 is 2/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 21 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
80/60 = 80 × 7/60 × 7 = 560/420 - Likewise, for the 2nd fraction, since 21 × 20 = 420,
14/21 = 14 × 20/21 × 20 = 280/420 - Add the two like fractions:
560/420 + 280/420 = 560 + 280/420 = 840/420 - 840/420 simplified gives 2/1
- So, 80/60 + 14/21 = 2/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/60+28/21 80/60+14/42 80/60+42/21 80/60+14/63 80/60+70/21 80/60+98/21