Subtract 18/27 from 7/8
7/8 - 18/27 is 5/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 27 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 8 × 27 = 216,
7/8 = 7 × 27/8 × 27 = 189/216 - Likewise, for the 2nd fraction, since 27 × 8 = 216,
18/27 = 18 × 8/27 × 8 = 144/216 - Subtract the two like fractions:
189/216 - 144/216 = 189 - 144/216 = 45/216 - After reducing the fraction, the answer is 5/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/8-18/27 7/8-36/27 7/16-18/27 7/8-18/54 21/8-18/27 7/8-54/27 7/24-18/27 7/8-18/81 35/8-18/27 7/8-90/27 7/40-18/27 49/8-18/27 7/56-18/27