Subtract 6/10 from 5/81
5/81 - 6/10 is -218/405.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 10 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 81 × 10 = 810,
5/81 = 5 × 10/81 × 10 = 50/810 - Likewise, for the 2nd fraction, since 10 × 81 = 810,
6/10 = 6 × 81/10 × 81 = 486/810 - Subtract the two like fractions:
50/810 - 486/810 = 50 - 486/810 = -436/810 - After reducing the fraction, the answer is -218/405
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/81-6/10 5/81-12/10 5/81-6/20 15/81-6/10 5/81-18/10 5/81-6/30 25/81-6/10 5/81-30/10 5/81-6/50 35/81-6/10 5/81-42/10 5/81-6/70