Subtract 12/45 from 54/18
1st number: 3 0/18, 2nd number: 12/45
54/18 - 12/45 is 41/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
54/18 = 54 × 5/18 × 5 = 270/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
12/45 = 12 × 2/45 × 2 = 24/90 - Subtract the two like fractions:
270/90 - 24/90 = 270 - 24/90 = 246/90 - After reducing the fraction, the answer is 41/15
- In mixed form: 211/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/18-24/45 54/36-12/45 54/18-12/90 54/18-36/45 54/18-60/45 54/90-12/45 54/18-84/45