Add 21/56 and 1/63
21/56 + 1/63 is 197/504.
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,
21/56 = 21 × 9/56 × 9 = 189/504 - Likewise, for the 2nd fraction, since 63 × 8 = 504,
1/63 = 1 × 8/63 × 8 = 8/504 - Add the two like fractions:
189/504 + 8/504 = 189 + 8/504 = 197/504 - So, 21/56 + 1/63 = 197/504
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/56+1/63 21/56+2/63 63/56+1/63 21/56+3/63 21/56+5/63 21/56+7/63