Subtract 7/14 from 81/84
81/84 - 7/14 is 13/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 14 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
81/84 = 81 × 1/84 × 1 = 81/84 - Likewise, for the 2nd fraction, since 14 × 6 = 84,
7/14 = 7 × 6/14 × 6 = 42/84 - Subtract the two like fractions:
81/84 - 42/84 = 81 - 42/84 = 39/84 - After reducing the fraction, the answer is 13/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/84-7/28 81/84-21/14 81/84-7/42 81/84-35/14 81/84-7/70 81/84-49/14 81/84-7/98