Add 72/18 and 63/56
1st number: 4 0/18, 2nd number: 1 7/56
72/18 + 63/56 is 41/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 56 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 18 × 28 = 504,
72/18 = 72 × 28/18 × 28 = 2016/504 - Likewise, for the 2nd fraction, since 56 × 9 = 504,
63/56 = 63 × 9/56 × 9 = 567/504 - Add the two like fractions:
2016/504 + 567/504 = 2016 + 567/504 = 2583/504 - 2583/504 simplified gives 41/8
- So, 72/18 + 63/56 = 41/8
In mixed form: 51/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/36+63/56 72/54+63/56 72/90+63/56