Add 81/5 and 45/8
1st number: 16 1/5, 2nd number: 5 5/8
81/5 + 45/8 is 873/40.
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,
45/8 = 45 × 5/8 × 5 = 225/40 - Add the two like fractions:
648/40 + 225/40 = 648 + 225/40 = 873/40 - So, 81/5 + 45/8 = 873/40
In mixed form: 2133/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/5+90/8 81/10+45/8 81/5+45/16 81/15+45/8 81/5+45/24 81/25+45/8 81/5+45/40 81/35+45/8 81/5+45/56