Subtract 8/81 from 14/40
14/40 - 8/81 is 407/1620.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 81 is 3240
Next, find the equivalent fraction of both fractional numbers with denominator 3240 - For the 1st fraction, since 40 × 81 = 3240,
14/40 = 14 × 81/40 × 81 = 1134/3240 - Likewise, for the 2nd fraction, since 81 × 40 = 3240,
8/81 = 8 × 40/81 × 40 = 320/3240 - Subtract the two like fractions:
1134/3240 - 320/3240 = 1134 - 320/3240 = 814/3240 - After reducing the fraction, the answer is 407/1620
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/40-8/81 14/40-16/81 14/80-8/81 42/40-8/81 14/40-24/81 70/40-8/81 14/40-40/81 98/40-8/81 14/40-56/81