Subtract 9/30 from 81/10
1st number: 8 1/10, 2nd number: 9/30
81/10 - 9/30 is 39/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 10 × 3 = 30,
81/10 = 81 × 3/10 × 3 = 243/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
9/30 = 9 × 1/30 × 1 = 9/30 - Subtract the two like fractions:
243/30 - 9/30 = 243 - 9/30 = 234/30 - After reducing the fraction, the answer is 39/5
- In mixed form: 74/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/10-18/30 81/20-9/30 81/10-9/60 81/10-27/30 81/30-9/30 81/10-9/90 81/10-45/30 81/50-9/30 81/10-63/30 81/70-9/30