Subtract 3/7 from 15/75
15/75 - 3/7 is -8/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 7 is 525
Next, find the equivalent fraction of both fractional numbers with denominator 525 - For the 1st fraction, since 75 × 7 = 525,
15/75 = 15 × 7/75 × 7 = 105/525 - Likewise, for the 2nd fraction, since 7 × 75 = 525,
3/7 = 3 × 75/7 × 75 = 225/525 - Subtract the two like fractions:
105/525 - 225/525 = 105 - 225/525 = -120/525 - After reducing the fraction, the answer is -8/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/75-3/7 15/75-6/7 15/75-3/14 45/75-3/7 15/75-9/7 15/75-3/21 15/75-15/7 15/75-3/35 15/75-21/7 15/75-3/49