Add 21/12 and 2/63
1st number: 1 9/12, 2nd number: 2/63
21/12 + 2/63 is 449/252.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 63 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 12 × 21 = 252,
21/12 = 21 × 21/12 × 21 = 441/252 - Likewise, for the 2nd fraction, since 63 × 4 = 252,
2/63 = 2 × 4/63 × 4 = 8/252 - Add the two like fractions:
441/252 + 8/252 = 441 + 8/252 = 449/252 - So, 21/12 + 2/63 = 449/252
In mixed form: 1197/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/12+2/63 21/12+4/63 21/24+2/63 63/12+2/63 21/12+6/63 21/36+2/63 21/12+10/63 21/60+2/63 21/12+14/63 21/84+2/63