Add 42/63 and 48/20
1st number: 42/63, 2nd number: 2 8/20
42/63 + 48/20 is 46/15.
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,
42/63 = 42 × 20/63 × 20 = 840/1260 - Likewise, for the 2nd fraction, since 20 × 63 = 1260,
48/20 = 48 × 63/20 × 63 = 3024/1260 - Add the two like fractions:
840/1260 + 3024/1260 = 840 + 3024/1260 = 3864/1260 - 3864/1260 simplified gives 46/15
- So, 42/63 + 48/20 = 46/15
In mixed form: 31/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/63+48/20 42/63+96/20 42/63+48/40 42/63+48/60