Subtract 21/40 from 24/10
1st number: 2 4/10, 2nd number: 21/40
24/10 - 21/40 is 15/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 10 × 4 = 40,
24/10 = 24 × 4/10 × 4 = 96/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
21/40 = 21 × 1/40 × 1 = 21/40 - Subtract the two like fractions:
96/40 - 21/40 = 96 - 21/40 = 75/40 - After reducing the fraction, the answer is 15/8
- In mixed form: 17/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/10-21/40 24/10-42/40 24/20-21/40 24/10-21/80 72/10-21/40 24/10-63/40 24/30-21/40 24/50-21/40 24/70-21/40