Subtract 1/9 from 21/63
21/63 - 1/9 is 2/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 9 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 63 × 1 = 63,
21/63 = 21 × 1/63 × 1 = 21/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
1/9 = 1 × 7/9 × 7 = 7/63 - Subtract the two like fractions:
21/63 - 7/63 = 21 - 7/63 = 14/63 - After reducing the fraction, the answer is 2/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/63-1/9 21/63-2/9 21/63-1/18 21/63-3/9 21/63-1/27 21/63-5/9 21/63-1/45 21/63-7/9 21/63-1/63