Subtract 1/10 from 30/81
30/81 - 1/10 is 73/270.
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,
30/81 = 30 × 10/81 × 10 = 300/810 - Likewise, for the 2nd fraction, since 10 × 81 = 810,
1/10 = 1 × 81/10 × 81 = 81/810 - Subtract the two like fractions:
300/810 - 81/810 = 300 - 81/810 = 219/810 - After reducing the fraction, the answer is 73/270
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/81-1/10 30/81-2/10 30/81-1/20 90/81-1/10 30/81-3/10 30/81-1/30 30/81-5/10 30/81-1/50 30/81-7/10 30/81-1/70