Subtract 14/81 from 15/30
15/30 - 14/81 is 53/162.
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,
15/30 = 15 × 27/30 × 27 = 405/810 - Likewise, for the 2nd fraction, since 81 × 10 = 810,
14/81 = 14 × 10/81 × 10 = 140/810 - Subtract the two like fractions:
405/810 - 140/810 = 405 - 140/810 = 265/810 - After reducing the fraction, the answer is 53/162
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 15/30-28/81 15/60-14/81 45/30-14/81 15/30-42/81 15/90-14/81 75/30-14/81 15/30-70/81 15/30-98/81