Subtract 21/15 from 25/10
1st number: 2 5/10, 2nd number: 1 6/15
25/10 - 21/15 is 11/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 15 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 10 × 3 = 30,
25/10 = 25 × 3/10 × 3 = 75/30 - Likewise, for the 2nd fraction, since 15 × 2 = 30,
21/15 = 21 × 2/15 × 2 = 42/30 - Subtract the two like fractions:
75/30 - 42/30 = 75 - 42/30 = 33/30 - After reducing the fraction, the answer is 11/10
- In mixed form: 11/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/10-21/15 25/10-42/15 25/20-21/15 25/10-21/30 75/10-21/15 25/10-63/15 25/30-21/15 25/10-21/45 25/50-21/15 25/10-21/75 25/70-21/15