Subtract 30/81 from 6/10
6/10 - 30/81 is 31/135.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 81 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 10 × 81 = 810,
6/10 = 6 × 81/10 × 81 = 486/810 - Likewise, for the 2nd fraction, since 81 × 10 = 810,
30/81 = 30 × 10/81 × 10 = 300/810 - Subtract the two like fractions:
486/810 - 300/810 = 486 - 300/810 = 186/810 - After reducing the fraction, the answer is 31/135
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/10-30/81 6/10-60/81 6/20-30/81 18/10-30/81 6/10-90/81 6/30-30/81 30/10-30/81 6/50-30/81 42/10-30/81 6/70-30/81