Add 56/45 and 21/7
1st number: 1 11/45, 2nd number: 3 0/7
56/45 + 21/7 is 191/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 7 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 45 × 7 = 315,
56/45 = 56 × 7/45 × 7 = 392/315 - Likewise, for the 2nd fraction, since 7 × 45 = 315,
21/7 = 21 × 45/7 × 45 = 945/315 - Add the two like fractions:
392/315 + 945/315 = 392 + 945/315 = 1337/315 - 1337/315 simplified gives 191/45
- So, 56/45 + 21/7 = 191/45
In mixed form: 411/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/45+42/7 56/90+21/7 56/45+21/14 56/45+63/7 56/45+21/35 56/45+21/49