Subtract 81/10 from 30/6
1st number: 5 0/6, 2nd number: 8 1/10
30/6 - 81/10 is -31/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 10 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 6 × 5 = 30,
30/6 = 30 × 5/6 × 5 = 150/30 - Likewise, for the 2nd fraction, since 10 × 3 = 30,
81/10 = 81 × 3/10 × 3 = 243/30 - Subtract the two like fractions:
150/30 - 243/30 = 150 - 243/30 = -93/30 - After reducing the fraction, the answer is -31/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/6-81/10 30/12-81/10 30/6-81/20 90/6-81/10 30/18-81/10 30/6-81/30 30/6-81/50 30/42-81/10 30/6-81/70