Subtract 15/20 from 40/75
40/75 - 15/20 is -13/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 20 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 75 × 4 = 300,
40/75 = 40 × 4/75 × 4 = 160/300 - Likewise, for the 2nd fraction, since 20 × 15 = 300,
15/20 = 15 × 15/20 × 15 = 225/300 - Subtract the two like fractions:
160/300 - 225/300 = 160 - 225/300 = -65/300 - After reducing the fraction, the answer is -13/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/75-15/20 40/75-30/20 40/75-15/40 40/75-45/20 40/75-15/60 40/75-75/20