Subtract 21/63 from 1/6
1/6 - 21/63 is -1/6.
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,
1/6 = 1 × 21/6 × 21 = 21/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
21/63 = 21 × 2/63 × 2 = 42/126 - Subtract the two like fractions:
21/126 - 42/126 = 21 - 42/126 = -21/126 - After reducing the fraction, the answer is -1/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/6-21/63 1/6-42/63 1/12-21/63 3/6-21/63 1/18-21/63 5/6-21/63 1/30-21/63 7/6-21/63 1/42-21/63