Add 56/20 and 81/8
1st number: 2 16/20, 2nd number: 10 1/8
56/20 + 81/8 is 517/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 20 × 2 = 40,
56/20 = 56 × 2/20 × 2 = 112/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
81/8 = 81 × 5/8 × 5 = 405/40 - Add the two like fractions:
112/40 + 405/40 = 112 + 405/40 = 517/40 - So, 56/20 + 81/8 = 517/40
In mixed form: 1237/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/40+81/8 56/20+81/16 56/60+81/8 56/20+81/24 56/20+81/40 56/20+81/56