Subtract 18/36 from 1/8
1/8 - 18/36 is -3/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 36 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 8 × 9 = 72,
1/8 = 1 × 9/8 × 9 = 9/72 - Likewise, for the 2nd fraction, since 36 × 2 = 72,
18/36 = 18 × 2/36 × 2 = 36/72 - Subtract the two like fractions:
9/72 - 36/72 = 9 - 36/72 = -27/72 - After reducing the fraction, the answer is -3/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/8-18/36 1/16-18/36 1/8-18/72 3/8-18/36 1/8-54/36 1/24-18/36 5/8-18/36 1/8-90/36 1/40-18/36 7/8-18/36 1/56-18/36