Subtract 40/75 from 9/18
9/18 - 40/75 is -1/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 75 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 18 × 25 = 450,
9/18 = 9 × 25/18 × 25 = 225/450 - Likewise, for the 2nd fraction, since 75 × 6 = 450,
40/75 = 40 × 6/75 × 6 = 240/450 - Subtract the two like fractions:
225/450 - 240/450 = 225 - 240/450 = -15/450 - After reducing the fraction, the answer is -1/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 9/18-80/75 9/36-40/75 27/18-40/75 9/54-40/75 45/18-40/75 9/90-40/75 63/18-40/75