Subtract 40/14 from 45/28
1st number: 1 17/28, 2nd number: 2 12/14
45/28 - 40/14 is -5/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 14 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 28 × 1 = 28,
45/28 = 45 × 1/28 × 1 = 45/28 - Likewise, for the 2nd fraction, since 14 × 2 = 28,
40/14 = 40 × 2/14 × 2 = 80/28 - Subtract the two like fractions:
45/28 - 80/28 = 45 - 80/28 = -35/28 - After reducing the fraction, the answer is -5/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/28-40/14 45/28-80/14 45/56-40/14 45/28-40/28 45/84-40/14 45/28-40/42 45/28-40/70 45/28-40/98