Add 81/5 and 63/8
1st number: 16 1/5, 2nd number: 7 7/8
81/5 + 63/8 is 963/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 5 × 8 = 40,
81/5 = 81 × 8/5 × 8 = 648/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
63/8 = 63 × 5/8 × 5 = 315/40 - Add the two like fractions:
648/40 + 315/40 = 648 + 315/40 = 963/40 - So, 81/5 + 63/8 = 963/40
In mixed form: 243/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/10+63/8 81/5+63/16 81/15+63/8 81/5+63/24 81/25+63/8 81/5+63/40 81/35+63/8 81/5+63/56