Subtract 54/12 from 45/3
1st number: 15 0/3, 2nd number: 4 6/12
45/3 - 54/12 is 21/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 12 is 12
Next, find the equivalent fraction of both fractional numbers with denominator 12 - For the 1st fraction, since 3 × 4 = 12,
45/3 = 45 × 4/3 × 4 = 180/12 - Likewise, for the 2nd fraction, since 12 × 1 = 12,
54/12 = 54 × 1/12 × 1 = 54/12 - Subtract the two like fractions:
180/12 - 54/12 = 180 - 54/12 = 126/12 - After reducing the fraction, the answer is 21/2
- In mixed form: 101/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/3-54/12 45/6-54/12 45/3-54/24 45/9-54/12 45/3-54/36 45/15-54/12 45/3-54/60 45/21-54/12 45/3-54/84