Subtract 21/27 from 10/9
1st number: 1 1/9, 2nd number: 21/27
10/9 - 21/27 is 1/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 27 is 27
Next, find the equivalent fraction of both fractional numbers with denominator 27 - For the 1st fraction, since 9 × 3 = 27,
10/9 = 10 × 3/9 × 3 = 30/27 - Likewise, for the 2nd fraction, since 27 × 1 = 27,
21/27 = 21 × 1/27 × 1 = 21/27 - Subtract the two like fractions:
30/27 - 21/27 = 30 - 21/27 = 9/27 - 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: 20/9-21/27 10/9-42/27 10/18-21/27 10/9-21/54 30/9-21/27 10/9-63/27 10/27-21/27 10/9-21/81 50/9-21/27 10/45-21/27 70/9-21/27 10/63-21/27