Subtract 40/75 from 3/36
3/36 - 40/75 is -9/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 75 is 900
Next, find the equivalent fraction of both fractional numbers with denominator 900 - For the 1st fraction, since 36 × 25 = 900,
3/36 = 3 × 25/36 × 25 = 75/900 - Likewise, for the 2nd fraction, since 75 × 12 = 900,
40/75 = 40 × 12/75 × 12 = 480/900 - Subtract the two like fractions:
75/900 - 480/900 = 75 - 480/900 = -405/900 - After reducing the fraction, the answer is -9/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/36-40/75 3/36-80/75 3/72-40/75 9/36-40/75 15/36-40/75 21/36-40/75