Add 56/72 and 45/84
56/72 + 45/84 is 331/252.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 84 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
56/72 = 56 × 7/72 × 7 = 392/504 - Likewise, for the 2nd fraction, since 84 × 6 = 504,
45/84 = 45 × 6/84 × 6 = 270/504 - Add the two like fractions:
392/504 + 270/504 = 392 + 270/504 = 662/504 - 662/504 simplified gives 331/252
- So, 56/72 + 45/84 = 331/252
In mixed form: 179/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/72+90/84