Subtract 20/81 from 14/30
14/30 - 20/81 is 89/405.
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,
14/30 = 14 × 27/30 × 27 = 378/810 - Likewise, for the 2nd fraction, since 81 × 10 = 810,
20/81 = 20 × 10/81 × 10 = 200/810 - Subtract the two like fractions:
378/810 - 200/810 = 378 - 200/810 = 178/810 - After reducing the fraction, the answer is 89/405
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/30-20/81 14/30-40/81 14/60-20/81 42/30-20/81 14/30-60/81 14/90-20/81 70/30-20/81 98/30-20/81