Subtract 10/35 from 21/75
21/75 - 10/35 is -1/175.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 35 is 525
Next, find the equivalent fraction of both fractional numbers with denominator 525 - For the 1st fraction, since 75 × 7 = 525,
21/75 = 21 × 7/75 × 7 = 147/525 - Likewise, for the 2nd fraction, since 35 × 15 = 525,
10/35 = 10 × 15/35 × 15 = 150/525 - Subtract the two like fractions:
147/525 - 150/525 = 147 - 150/525 = -3/525 - After reducing the fraction, the answer is -1/175
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/75-10/35 21/75-20/35 21/75-10/70 63/75-10/35 21/75-30/35 21/75-50/35 21/75-70/35