Add 7/21 and 14/80
7/21 + 14/80 is 61/120.
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,
7/21 = 7 × 80/21 × 80 = 560/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
14/80 = 14 × 21/80 × 21 = 294/1680 - Add the two like fractions:
560/1680 + 294/1680 = 560 + 294/1680 = 854/1680 - 854/1680 simplified gives 61/120
- So, 7/21 + 14/80 = 61/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/21+14/80 7/21+28/80 7/42+14/80 7/21+42/80 7/63+14/80 35/21+14/80 7/21+70/80 49/21+14/80 7/21+98/80