Add 54/72 and 30/56
54/72 + 30/56 is 9/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 56 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
54/72 = 54 × 7/72 × 7 = 378/504 - Likewise, for the 2nd fraction, since 56 × 9 = 504,
30/56 = 30 × 9/56 × 9 = 270/504 - Add the two like fractions:
378/504 + 270/504 = 378 + 270/504 = 648/504 - 648/504 simplified gives 9/7
- So, 54/72 + 30/56 = 9/7
In mixed form: 12/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/72+60/56 54/72+90/56