Subtract 40/45 from 56/75
56/75 - 40/45 is -32/225.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 45 is 225
Next, find the equivalent fraction of both fractional numbers with denominator 225 - For the 1st fraction, since 75 × 3 = 225,
56/75 = 56 × 3/75 × 3 = 168/225 - Likewise, for the 2nd fraction, since 45 × 5 = 225,
40/45 = 40 × 5/45 × 5 = 200/225 - Subtract the two like fractions:
168/225 - 200/225 = 168 - 200/225 = -32/225
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/75-80/45 56/75-40/90