Add 8/7 and 81/8
1st number: 1 1/7, 2nd number: 10 1/8
8/7 + 81/8 is 631/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 8 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 7 × 8 = 56,
8/7 = 8 × 8/7 × 8 = 64/56 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
81/8 = 81 × 7/8 × 7 = 567/56 - Add the two like fractions:
64/56 + 567/56 = 64 + 567/56 = 631/56 - So, 8/7 + 81/8 = 631/56
In mixed form: 1115/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/7+81/8 8/14+81/8 8/7+81/16 24/7+81/8 8/21+81/8 8/7+81/24 40/7+81/8 8/35+81/8 8/7+81/40 56/7+81/8 8/49+81/8 8/7+81/56