Add 81/7 and 9/8
1st number: 11 4/7, 2nd number: 1 1/8
81/7 + 9/8 is 711/56.
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,
81/7 = 81 × 8/7 × 8 = 648/56 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
9/8 = 9 × 7/8 × 7 = 63/56 - Add the two like fractions:
648/56 + 63/56 = 648 + 63/56 = 711/56 - So, 81/7 + 9/8 = 711/56
In mixed form: 1239/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/7+18/8 81/14+9/8 81/7+9/16 81/7+27/8 81/21+9/8 81/7+9/24 81/7+45/8 81/35+9/8 81/7+9/40 81/7+63/8 81/49+9/8 81/7+9/56