Add 54/56 and 3/72
54/56 + 3/72 is 169/168.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 56 × 9 = 504,
54/56 = 54 × 9/56 × 9 = 486/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
3/72 = 3 × 7/72 × 7 = 21/504 - Add the two like fractions:
486/504 + 21/504 = 486 + 21/504 = 507/504 - 507/504 simplified gives 169/168
- So, 54/56 + 3/72 = 169/168
In mixed form: 11/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/56+6/72 54/56+9/72 54/56+15/72 54/56+21/72