Add 20/63 and 63/12
1st number: 20/63, 2nd number: 5 3/12
20/63 + 63/12 is 1403/252.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 12 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 63 × 4 = 252,
20/63 = 20 × 4/63 × 4 = 80/252 - Likewise, for the 2nd fraction, since 12 × 21 = 252,
63/12 = 63 × 21/12 × 21 = 1323/252 - Add the two like fractions:
80/252 + 1323/252 = 80 + 1323/252 = 1403/252 - So, 20/63 + 63/12 = 1403/252
In mixed form: 5143/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/63+63/12 20/63+63/24 60/63+63/12 20/63+63/36 20/63+63/60 20/63+63/84