Add 4/63 and 21/20
1st number: 4/63, 2nd number: 1 1/20
4/63 + 21/20 is 1403/1260.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 20 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 63 × 20 = 1260,
4/63 = 4 × 20/63 × 20 = 80/1260 - Likewise, for the 2nd fraction, since 20 × 63 = 1260,
21/20 = 21 × 63/20 × 63 = 1323/1260 - Add the two like fractions:
80/1260 + 1323/1260 = 80 + 1323/1260 = 1403/1260 - So, 4/63 + 21/20 = 1403/1260
In mixed form: 1143/1260
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/63+21/20 4/63+42/20 4/63+21/40 12/63+21/20 4/63+63/20 4/63+21/60 20/63+21/20 28/63+21/20