Add 80/6 and 81/7
1st number: 13 2/6, 2nd number: 11 4/7
80/6 + 81/7 is 523/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 7 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 6 × 7 = 42,
80/6 = 80 × 7/6 × 7 = 560/42 - Likewise, for the 2nd fraction, since 7 × 6 = 42,
81/7 = 81 × 6/7 × 6 = 486/42 - Add the two like fractions:
560/42 + 486/42 = 560 + 486/42 = 1046/42 - 1046/42 simplified gives 523/21
- So, 80/6 + 81/7 = 523/21
In mixed form: 2419/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/12+81/7 80/6+81/14 80/18+81/7 80/6+81/21 80/30+81/7 80/6+81/35 80/42+81/7 80/6+81/49