Subtract 45/9 from 40/28
1st number: 1 12/28, 2nd number: 5 0/9
40/28 - 45/9 is -25/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 9 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 28 × 9 = 252,
40/28 = 40 × 9/28 × 9 = 360/252 - Likewise, for the 2nd fraction, since 9 × 28 = 252,
45/9 = 45 × 28/9 × 28 = 1260/252 - Subtract the two like fractions:
360/252 - 1260/252 = 360 - 1260/252 = -900/252 - After reducing the fraction, the answer is -25/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/28-45/9 40/28-90/9 40/56-45/9 40/28-45/18 40/84-45/9 40/28-45/27 40/28-45/63