Subtract 54/9 from 45/12
1st number: 3 9/12, 2nd number: 6 0/9
45/12 - 54/9 is -9/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 9 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 12 × 3 = 36,
45/12 = 45 × 3/12 × 3 = 135/36 - Likewise, for the 2nd fraction, since 9 × 4 = 36,
54/9 = 54 × 4/9 × 4 = 216/36 - Subtract the two like fractions:
135/36 - 216/36 = 135 - 216/36 = -81/36 - 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: 90/12-54/9 45/24-54/9 45/12-54/18 45/36-54/9 45/12-54/27 45/60-54/9 45/12-54/45 45/84-54/9 45/12-54/63