Add 80/28 and 81/80
1st number: 2 24/28, 2nd number: 1 1/80
80/28 + 81/80 is 2167/560.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 28 × 20 = 560,
80/28 = 80 × 20/28 × 20 = 1600/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
81/80 = 81 × 7/80 × 7 = 567/560 - Add the two like fractions:
1600/560 + 567/560 = 1600 + 567/560 = 2167/560 - So, 80/28 + 81/80 = 2167/560
In mixed form: 3487/560
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/56+81/80 80/84+81/80