Add 27/63 and 21/56
27/63 + 21/56 is 45/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 56 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 63 × 8 = 504,
27/63 = 27 × 8/63 × 8 = 216/504 - Likewise, for the 2nd fraction, since 56 × 9 = 504,
21/56 = 21 × 9/56 × 9 = 189/504 - Add the two like fractions:
216/504 + 189/504 = 216 + 189/504 = 405/504 - 405/504 simplified gives 45/56
- So, 27/63 + 21/56 = 45/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/63+21/56 27/63+42/56 81/63+21/56 27/63+63/56