Add 20/7 and 56/72
1st number: 2 6/7, 2nd number: 56/72
20/7 + 56/72 is 229/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 7 × 72 = 504,
20/7 = 20 × 72/7 × 72 = 1440/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
56/72 = 56 × 7/72 × 7 = 392/504 - Add the two like fractions:
1440/504 + 392/504 = 1440 + 392/504 = 1832/504 - 1832/504 simplified gives 229/63
- So, 20/7 + 56/72 = 229/63
In mixed form: 340/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/7+56/72 20/14+56/72 60/7+56/72 20/21+56/72 20/35+56/72 20/49+56/72