Subtract 81/30 from 24/5
1st number: 4 4/5, 2nd number: 2 21/30
24/5 - 81/30 is 21/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 5 × 6 = 30,
24/5 = 24 × 6/5 × 6 = 144/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
81/30 = 81 × 1/30 × 1 = 81/30 - Subtract the two like fractions:
144/30 - 81/30 = 144 - 81/30 = 63/30 - After reducing the fraction, the answer is 21/10
- In mixed form: 21/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/5-81/30 24/10-81/30 24/5-81/60 72/5-81/30 24/15-81/30 24/5-81/90 24/25-81/30 24/35-81/30