Add 21/63 and 80/56
1st number: 21/63, 2nd number: 1 24/56
21/63 + 80/56 is 37/21.
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,
21/63 = 21 × 8/63 × 8 = 168/504 - Likewise, for the 2nd fraction, since 56 × 9 = 504,
80/56 = 80 × 9/56 × 9 = 720/504 - Add the two like fractions:
168/504 + 720/504 = 168 + 720/504 = 888/504 - 888/504 simplified gives 37/21
- So, 21/63 + 80/56 = 37/21
In mixed form: 116/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/63+80/56