Subtract 21/40 from 24/5
1st number: 4 4/5, 2nd number: 21/40
24/5 - 21/40 is 171/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 5 × 8 = 40,
24/5 = 24 × 8/5 × 8 = 192/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
21/40 = 21 × 1/40 × 1 = 21/40 - Subtract the two like fractions:
192/40 - 21/40 = 192 - 21/40 = 171/40 - In mixed form: 411/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/5-21/40 24/5-42/40 24/10-21/40 24/5-21/80 72/5-21/40 24/5-63/40 24/15-21/40 24/25-21/40 24/35-21/40