Add 75/7 and 21/80
1st number: 10 5/7, 2nd number: 21/80
75/7 + 21/80 is 6147/560.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 7 × 80 = 560,
75/7 = 75 × 80/7 × 80 = 6000/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
21/80 = 21 × 7/80 × 7 = 147/560 - Add the two like fractions:
6000/560 + 147/560 = 6000 + 147/560 = 6147/560 - So, 75/7 + 21/80 = 6147/560
In mixed form: 10547/560
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/7+42/80 75/14+21/80 75/7+63/80 75/21+21/80 75/35+21/80 75/49+21/80