Add 45/7 and 81/80
1st number: 6 3/7, 2nd number: 1 1/80
45/7 + 81/80 is 4167/560.
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,
45/7 = 45 × 80/7 × 80 = 3600/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
81/80 = 81 × 7/80 × 7 = 567/560 - Add the two like fractions:
3600/560 + 567/560 = 3600 + 567/560 = 4167/560 - So, 45/7 + 81/80 = 4167/560
In mixed form: 7247/560
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/7+81/80 45/14+81/80 45/21+81/80 45/35+81/80 45/49+81/80