Subtract 1/81 from 24/42
24/42 - 1/81 is 317/567.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 81 is 1134
Next, find the equivalent fraction of both fractional numbers with denominator 1134 - For the 1st fraction, since 42 × 27 = 1134,
24/42 = 24 × 27/42 × 27 = 648/1134 - Likewise, for the 2nd fraction, since 81 × 14 = 1134,
1/81 = 1 × 14/81 × 14 = 14/1134 - Subtract the two like fractions:
648/1134 - 14/1134 = 648 - 14/1134 = 634/1134 - After reducing the fraction, the answer is 317/567
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/42-1/81 24/42-2/81 24/84-1/81 72/42-1/81 24/42-3/81 24/42-5/81 24/42-7/81