Add 64/5 and 21/56
1st number: 12 4/5, 2nd number: 21/56
64/5 + 21/56 is 527/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 56 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 5 × 56 = 280,
64/5 = 64 × 56/5 × 56 = 3584/280 - Likewise, for the 2nd fraction, since 56 × 5 = 280,
21/56 = 21 × 5/56 × 5 = 105/280 - Add the two like fractions:
3584/280 + 105/280 = 3584 + 105/280 = 3689/280 - 3689/280 simplified gives 527/40
- So, 64/5 + 21/56 = 527/40
In mixed form: 137/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 64/5+42/56 64/10+21/56 64/5+63/56 64/15+21/56 64/25+21/56 64/35+21/56