Subtract 40/8 from 14/81
1st number: 14/81, 2nd number: 5 0/8
14/81 - 40/8 is -391/81.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 8 is 648
Next, find the equivalent fraction of both fractional numbers with denominator 648 - For the 1st fraction, since 81 × 8 = 648,
14/81 = 14 × 8/81 × 8 = 112/648 - Likewise, for the 2nd fraction, since 8 × 81 = 648,
40/8 = 40 × 81/8 × 81 = 3240/648 - Subtract the two like fractions:
112/648 - 3240/648 = 112 - 3240/648 = -3128/648 - After reducing the fraction, the answer is -391/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/81-40/8 14/81-80/8 14/81-40/16 42/81-40/8 14/81-40/24 70/81-40/8 98/81-40/8 14/81-40/56