Subtract 4/12 from 45/54
45/54 - 4/12 is 1/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 12 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 54 × 2 = 108,
45/54 = 45 × 2/54 × 2 = 90/108 - Likewise, for the 2nd fraction, since 12 × 9 = 108,
4/12 = 4 × 9/12 × 9 = 36/108 - Subtract the two like fractions:
90/108 - 36/108 = 90 - 36/108 = 54/108 - After reducing the fraction, the answer is 1/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/54-4/12 45/54-8/12 45/54-4/24 45/54-4/36 45/54-20/12 45/54-4/60 45/54-28/12 45/54-4/84