Subtract 15/28 from 45/12
1st number: 3 9/12, 2nd number: 15/28
45/12 - 15/28 is 45/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
45/12 = 45 × 7/12 × 7 = 315/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
15/28 = 15 × 3/28 × 3 = 45/84 - Subtract the two like fractions:
315/84 - 45/84 = 315 - 45/84 = 270/84 - After reducing the fraction, the answer is 45/14
- In mixed form: 33/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/12-15/28 45/12-30/28 45/24-15/28 45/12-15/56 45/12-45/28 45/36-15/28 45/12-15/84 45/12-75/28 45/60-15/28 45/84-15/28