Subtract 2/81 from 5/30
5/30 - 2/81 is 23/162.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 81 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 30 × 27 = 810,
5/30 = 5 × 27/30 × 27 = 135/810 - Likewise, for the 2nd fraction, since 81 × 10 = 810,
2/81 = 2 × 10/81 × 10 = 20/810 - Subtract the two like fractions:
135/810 - 20/810 = 135 - 20/810 = 115/810 - After reducing the fraction, the answer is 23/162
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/30-2/81 5/30-4/81 5/60-2/81 15/30-2/81 5/30-6/81 5/90-2/81 25/30-2/81 5/30-10/81 35/30-2/81 5/30-14/81