Subtract 45/28 from 5/12
1st number: 5/12, 2nd number: 1 17/28
5/12 - 45/28 is -25/21.
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,
5/12 = 5 × 7/12 × 7 = 35/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
45/28 = 45 × 3/28 × 3 = 135/84 - Subtract the two like fractions:
35/84 - 135/84 = 35 - 135/84 = -100/84 - After reducing the fraction, the answer is -25/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/12-45/28 5/12-90/28 5/24-45/28 5/12-45/56 15/12-45/28 5/36-45/28 5/12-45/84 25/12-45/28 5/60-45/28 35/12-45/28 5/84-45/28