Subtract 21/63 from 4/6
4/6 - 21/63 is 1/3.
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,
4/6 = 4 × 21/6 × 21 = 84/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
21/63 = 21 × 2/63 × 2 = 42/126 - Subtract the two like fractions:
84/126 - 42/126 = 84 - 42/126 = 42/126 - After reducing the fraction, the answer is 1/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/6-21/63 4/6-42/63 4/12-21/63 12/6-21/63 4/18-21/63 20/6-21/63 4/30-21/63 28/6-21/63 4/42-21/63