Add 14/21 and 28/80
14/21 + 28/80 is 61/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 21 × 80 = 1680,
14/21 = 14 × 80/21 × 80 = 1120/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
28/80 = 28 × 21/80 × 21 = 588/1680 - Add the two like fractions:
1120/1680 + 588/1680 = 1120 + 588/1680 = 1708/1680 - 1708/1680 simplified gives 61/60
- So, 14/21 + 28/80 = 61/60
In mixed form: 11/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/21+28/80 14/21+56/80 14/42+28/80 42/21+28/80 14/21+84/80 14/63+28/80 70/21+28/80 98/21+28/80