Subtract 3/63 from 21/6
1st number: 3 3/6, 2nd number: 3/63
21/6 - 3/63 is 145/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 63 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 6 × 21 = 126,
21/6 = 21 × 21/6 × 21 = 441/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
3/63 = 3 × 2/63 × 2 = 6/126 - Subtract the two like fractions:
441/126 - 6/126 = 441 - 6/126 = 435/126 - After reducing the fraction, the answer is 145/42
- In mixed form: 319/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/6-3/63 21/6-6/63 21/12-3/63 63/6-3/63 21/6-9/63 21/18-3/63 21/6-15/63 21/30-3/63 21/6-21/63 21/42-3/63