Subtract 2/8 from 1/18
1/18 - 2/8 is -7/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 8 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 18 × 4 = 72,
1/18 = 1 × 4/18 × 4 = 4/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
2/8 = 2 × 9/8 × 9 = 18/72 - Subtract the two like fractions:
4/72 - 18/72 = 4 - 18/72 = -14/72 - After reducing the fraction, the answer is -7/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/18-2/8 1/18-4/8 1/36-2/8 1/18-2/16 3/18-2/8 1/18-6/8 1/54-2/8 1/18-2/24 5/18-2/8 1/18-10/8 1/90-2/8 1/18-2/40 7/18-2/8 1/18-14/8 1/18-2/56