Subtract 15/12 from 45/25
1st number: 1 20/25, 2nd number: 1 3/12
45/25 - 15/12 is 11/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 12 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 25 × 12 = 300,
45/25 = 45 × 12/25 × 12 = 540/300 - Likewise, for the 2nd fraction, since 12 × 25 = 300,
15/12 = 15 × 25/12 × 25 = 375/300 - Subtract the two like fractions:
540/300 - 375/300 = 540 - 375/300 = 165/300 - After reducing the fraction, the answer is 11/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/25-15/12 45/25-30/12 45/50-15/12 45/25-15/24 45/25-45/12 45/75-15/12 45/25-15/36 45/25-75/12 45/25-15/60 45/25-15/84