Add 20/56 and 7/18
20/56 + 7/18 is 47/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 18 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 56 × 9 = 504,
20/56 = 20 × 9/56 × 9 = 180/504 - Likewise, for the 2nd fraction, since 18 × 28 = 504,
7/18 = 7 × 28/18 × 28 = 196/504 - Add the two like fractions:
180/504 + 196/504 = 180 + 196/504 = 376/504 - 376/504 simplified gives 47/63
- So, 20/56 + 7/18 = 47/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/56+7/18 20/56+14/18 20/56+7/36 60/56+7/18 20/56+21/18 20/56+7/54 20/56+35/18 20/56+7/90 20/56+49/18