Subtract 5/15 from 45/12
1st number: 3 9/12, 2nd number: 5/15
45/12 - 5/15 is 41/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 15 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
45/12 = 45 × 5/12 × 5 = 225/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
5/15 = 5 × 4/15 × 4 = 20/60 - Subtract the two like fractions:
225/60 - 20/60 = 225 - 20/60 = 205/60 - After reducing the fraction, the answer is 41/12
- In mixed form: 35/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/12-5/15 45/12-10/15 45/24-5/15 45/12-5/30 45/36-5/15 45/12-5/45 45/12-25/15 45/60-5/15 45/12-5/75 45/12-35/15 45/84-5/15