Add 9/28 and 63/72
9/28 + 63/72 is 67/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 28 × 18 = 504,
9/28 = 9 × 18/28 × 18 = 162/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
63/72 = 63 × 7/72 × 7 = 441/504 - Add the two like fractions:
162/504 + 441/504 = 162 + 441/504 = 603/504 - 603/504 simplified gives 67/56
- So, 9/28 + 63/72 = 67/56
In mixed form: 111/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/28+63/72 9/56+63/72 27/28+63/72 9/84+63/72 45/28+63/72 63/28+63/72