Subtract 15/45 from 10/75
10/75 - 15/45 is -1/5.
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,
10/75 = 10 × 3/75 × 3 = 30/225 - Likewise, for the 2nd fraction, since 45 × 5 = 225,
15/45 = 15 × 5/45 × 5 = 75/225 - Subtract the two like fractions:
30/225 - 75/225 = 30 - 75/225 = -45/225 - After reducing the fraction, the answer is -1/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/75-15/45 10/75-30/45 10/75-15/90 30/75-15/45 50/75-15/45 10/75-75/45 70/75-15/45