Subtract 54/18 from 6/8
1st number: 6/8, 2nd number: 3 0/18
6/8 - 54/18 is -9/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 18 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 8 × 9 = 72,
6/8 = 6 × 9/8 × 9 = 54/72 - Likewise, for the 2nd fraction, since 18 × 4 = 72,
54/18 = 54 × 4/18 × 4 = 216/72 - Subtract the two like fractions:
54/72 - 216/72 = 54 - 216/72 = -162/72 - After reducing the fraction, the answer is -9/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/8-54/18 6/16-54/18 6/8-54/36 18/8-54/18 6/24-54/18 30/8-54/18 6/40-54/18 6/8-54/90 42/8-54/18 6/56-54/18