Add 8/56 and 21/63
8/56 + 21/63 is 10/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 63 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 56 × 9 = 504,
8/56 = 8 × 9/56 × 9 = 72/504 - Likewise, for the 2nd fraction, since 63 × 8 = 504,
21/63 = 21 × 8/63 × 8 = 168/504 - Add the two like fractions:
72/504 + 168/504 = 72 + 168/504 = 240/504 - 240/504 simplified gives 10/21
- So, 8/56 + 21/63 = 10/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/56+21/63 8/56+42/63 24/56+21/63 40/56+21/63