Subtract 1/81 from 7/14
7/14 - 1/81 is 79/162.
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,
7/14 = 7 × 81/14 × 81 = 567/1134 - Likewise, for the 2nd fraction, since 81 × 14 = 1134,
1/81 = 1 × 14/81 × 14 = 14/1134 - Subtract the two like fractions:
567/1134 - 14/1134 = 567 - 14/1134 = 553/1134 - After reducing the fraction, the answer is 79/162
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 7/14-2/81 7/28-1/81 21/14-1/81 7/14-3/81 7/42-1/81 35/14-1/81 7/14-5/81 7/70-1/81 49/14-1/81 7/14-7/81 7/98-1/81