Subtract 54/12 from 15/9
1st number: 1 6/9, 2nd number: 4 6/12
15/9 - 54/12 is -17/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 12 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 9 × 4 = 36,
15/9 = 15 × 4/9 × 4 = 60/36 - Likewise, for the 2nd fraction, since 12 × 3 = 36,
54/12 = 54 × 3/12 × 3 = 162/36 - Subtract the two like fractions:
60/36 - 162/36 = 60 - 162/36 = -102/36 - After reducing the fraction, the answer is -17/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/9-54/12 15/18-54/12 15/9-54/24 45/9-54/12 15/27-54/12 15/9-54/36 75/9-54/12 15/45-54/12 15/9-54/60 15/63-54/12 15/9-54/84