Subtract 7/27 from 9/18
9/18 - 7/27 is 13/54.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 27 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 18 × 3 = 54,
9/18 = 9 × 3/18 × 3 = 27/54 - Likewise, for the 2nd fraction, since 27 × 2 = 54,
7/27 = 7 × 2/27 × 2 = 14/54 - Subtract the two like fractions:
27/54 - 14/54 = 27 - 14/54 = 13/54
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 9/18-14/27 9/36-7/27 9/18-7/54 27/18-7/27 9/18-21/27 9/54-7/27 9/18-7/81 45/18-7/27 9/18-35/27 9/90-7/27 63/18-7/27 9/18-49/27