Subtract 3/81 from 40/14
1st number: 2 12/14, 2nd number: 3/81
40/14 - 3/81 is 533/189.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 81 is 1134
Next, find the equivalent fraction of both fractional numbers with denominator 1134 - For the 1st fraction, since 14 × 81 = 1134,
40/14 = 40 × 81/14 × 81 = 3240/1134 - Likewise, for the 2nd fraction, since 81 × 14 = 1134,
3/81 = 3 × 14/81 × 14 = 42/1134 - Subtract the two like fractions:
3240/1134 - 42/1134 = 3240 - 42/1134 = 3198/1134 - After reducing the fraction, the answer is 533/189
- In mixed form: 2155/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/14-3/81 40/14-6/81 40/28-3/81 40/14-9/81 40/42-3/81 40/14-15/81 40/70-3/81 40/14-21/81 40/98-3/81