Subtract 27/8 from 18/36
1st number: 18/36, 2nd number: 3 3/8
18/36 - 27/8 is -23/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 8 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 36 × 2 = 72,
18/36 = 18 × 2/36 × 2 = 36/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
27/8 = 27 × 9/8 × 9 = 243/72 - Subtract the two like fractions:
36/72 - 243/72 = 36 - 243/72 = -207/72 - After reducing the fraction, the answer is -23/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/36-54/8 18/72-27/8 18/36-27/16 54/36-27/8 18/36-81/8 18/36-27/24 90/36-27/8 18/36-27/40 18/36-27/56