Subtract 21/63 from 20/3
1st number: 6 2/3, 2nd number: 21/63
20/3 - 21/63 is 19/3.
Steps for subtracting 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 - Subtract the two like fractions:
420/63 - 21/63 = 420 - 21/63 = 399/63 - After reducing the fraction, the answer is 19/3
- In mixed form: 61/3
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