Add 21/14 and 2/80
1st number: 1 7/14, 2nd number: 2/80
21/14 + 2/80 is 61/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 14 × 40 = 560,
21/14 = 21 × 40/14 × 40 = 840/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
2/80 = 2 × 7/80 × 7 = 14/560 - Add the two like fractions:
840/560 + 14/560 = 840 + 14/560 = 854/560 - 854/560 simplified gives 61/40
- So, 21/14 + 2/80 = 61/40
In mixed form: 121/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/14+2/80 21/14+4/80 21/28+2/80 63/14+2/80 21/14+6/80 21/42+2/80 21/14+10/80 21/70+2/80 21/14+14/80 21/98+2/80