Subtract 1/27 from 7/9
7/9 - 1/27 is 20/27.
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,
7/9 = 7 × 3/9 × 3 = 21/27 - Likewise, for the 2nd fraction, since 27 × 1 = 27,
1/27 = 1 × 1/27 × 1 = 1/27 - Subtract the two like fractions:
21/27 - 1/27 = 21 - 1/27 = 20/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/9-1/27 7/9-2/27 7/18-1/27 7/9-1/54 21/9-1/27 7/9-3/27 7/27-1/27 7/9-1/81 35/9-1/27 7/9-5/27 7/45-1/27 49/9-1/27 7/9-7/27 7/63-1/27