Subtract 24/21 from 15/10
1st number: 1 5/10, 2nd number: 1 3/21
15/10 - 24/21 is 5/14.
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,
15/10 = 15 × 21/10 × 21 = 315/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
24/21 = 24 × 10/21 × 10 = 240/210 - Subtract the two like fractions:
315/210 - 240/210 = 315 - 240/210 = 75/210 - After reducing the fraction, the answer is 5/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/10-24/21 15/10-48/21 15/20-24/21 15/10-24/42 45/10-24/21 15/10-72/21 15/30-24/21 15/10-24/63 75/10-24/21 15/50-24/21 15/70-24/21