Subtract 20/25 from 35/21
1st number: 1 14/21, 2nd number: 20/25
35/21 - 20/25 is 13/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 25 is 525
Next, find the equivalent fraction of both fractional numbers with denominator 525 - For the 1st fraction, since 21 × 25 = 525,
35/21 = 35 × 25/21 × 25 = 875/525 - Likewise, for the 2nd fraction, since 25 × 21 = 525,
20/25 = 20 × 21/25 × 21 = 420/525 - Subtract the two like fractions:
875/525 - 420/525 = 875 - 420/525 = 455/525 - After reducing the fraction, the answer is 13/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/21-20/25 35/21-40/25 35/42-20/25 35/21-20/50 35/21-60/25 35/63-20/25 35/21-20/75