Add 56/63 and 21/4
1st number: 56/63, 2nd number: 5 1/4
56/63 + 21/4 is 221/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 4 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 63 × 4 = 252,
56/63 = 56 × 4/63 × 4 = 224/252 - Likewise, for the 2nd fraction, since 4 × 63 = 252,
21/4 = 21 × 63/4 × 63 = 1323/252 - Add the two like fractions:
224/252 + 1323/252 = 224 + 1323/252 = 1547/252 - 1547/252 simplified gives 221/36
- So, 56/63 + 21/4 = 221/36
In mixed form: 65/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/63+42/4 56/63+21/8 56/63+63/4 56/63+21/12 56/63+21/20 56/63+21/28