Subtract 27/21 from 25/10
1st number: 2 5/10, 2nd number: 1 6/21
25/10 - 27/21 is 17/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 10 × 21 = 210,
25/10 = 25 × 21/10 × 21 = 525/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
27/21 = 27 × 10/21 × 10 = 270/210 - Subtract the two like fractions:
525/210 - 270/210 = 525 - 270/210 = 255/210 - After reducing the fraction, the answer is 17/14
- In mixed form: 13/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/10-27/21 25/10-54/21 25/20-27/21 25/10-27/42 75/10-27/21 25/10-81/21 25/30-27/21 25/10-27/63 25/50-27/21 25/70-27/21