Add 12/5 and 81/56
1st number: 2 2/5, 2nd number: 1 25/56
12/5 + 81/56 is 1077/280.
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,
12/5 = 12 × 56/5 × 56 = 672/280 - Likewise, for the 2nd fraction, since 56 × 5 = 280,
81/56 = 81 × 5/56 × 5 = 405/280 - Add the two like fractions:
672/280 + 405/280 = 672 + 405/280 = 1077/280 - So, 12/5 + 81/56 = 1077/280
In mixed form: 3237/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/5+81/56 12/10+81/56 36/5+81/56 12/15+81/56 60/5+81/56 12/25+81/56 84/5+81/56 12/35+81/56