Subtract 2/21 from 20/75
20/75 - 2/21 is 6/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 21 is 525
Next, find the equivalent fraction of both fractional numbers with denominator 525 - For the 1st fraction, since 75 × 7 = 525,
20/75 = 20 × 7/75 × 7 = 140/525 - Likewise, for the 2nd fraction, since 21 × 25 = 525,
2/21 = 2 × 25/21 × 25 = 50/525 - Subtract the two like fractions:
140/525 - 50/525 = 140 - 50/525 = 90/525 - After reducing the fraction, the answer is 6/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/75-2/21 20/75-4/21 20/75-2/42 60/75-2/21 20/75-6/21 20/75-2/63 20/75-10/21 20/75-14/21