Add 20/3 and 21/63
1st number: 6 2/3, 2nd number: 21/63
20/3 + 21/63 is 7/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 63 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 3 × 21 = 63,
20/3 = 20 × 21/3 × 21 = 420/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
21/63 = 21 × 1/63 × 1 = 21/63 - Add the two like fractions:
420/63 + 21/63 = 420 + 21/63 = 441/63 - 441/63 simplified gives 7/1
- So, 20/3 + 21/63 = 7/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/3+21/63 20/3+42/63 20/6+21/63 60/3+21/63 20/9+21/63 20/15+21/63 20/21+21/63