Subtract 54/8 from 15/36
1st number: 15/36, 2nd number: 6 6/8
15/36 - 54/8 is -19/3.
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,
15/36 = 15 × 2/36 × 2 = 30/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
54/8 = 54 × 9/8 × 9 = 486/72 - Subtract the two like fractions:
30/72 - 486/72 = 30 - 486/72 = -456/72 - After reducing the fraction, the answer is -19/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/36-54/8 15/72-54/8 15/36-54/16 45/36-54/8 15/36-54/24 75/36-54/8 15/36-54/40 15/36-54/56