Add 9/18 and 20/56
9/18 + 20/56 is 6/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 56 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 18 × 28 = 504,
9/18 = 9 × 28/18 × 28 = 252/504 - Likewise, for the 2nd fraction, since 56 × 9 = 504,
20/56 = 20 × 9/56 × 9 = 180/504 - Add the two like fractions:
252/504 + 180/504 = 252 + 180/504 = 432/504 - 432/504 simplified gives 6/7
- So, 9/18 + 20/56 = 6/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 9/18+40/56 9/36+20/56 27/18+20/56 9/18+60/56 9/54+20/56 45/18+20/56 9/90+20/56 63/18+20/56