Add 56/45 and 63/12
1st number: 1 11/45, 2nd number: 5 3/12
56/45 + 63/12 is 1169/180.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 12 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
56/45 = 56 × 4/45 × 4 = 224/180 - Likewise, for the 2nd fraction, since 12 × 15 = 180,
63/12 = 63 × 15/12 × 15 = 945/180 - Add the two like fractions:
224/180 + 945/180 = 224 + 945/180 = 1169/180 - So, 56/45 + 63/12 = 1169/180
In mixed form: 689/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/90+63/12 56/45+63/24 56/45+63/36 56/45+63/60 56/45+63/84