Subtract 10/27 from 81/84
81/84 - 10/27 is 449/756.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 27 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 84 × 9 = 756,
81/84 = 81 × 9/84 × 9 = 729/756 - Likewise, for the 2nd fraction, since 27 × 28 = 756,
10/27 = 10 × 28/27 × 28 = 280/756 - Subtract the two like fractions:
729/756 - 280/756 = 729 - 280/756 = 449/756
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/84-20/27 81/84-10/54 81/84-30/27 81/84-10/81 81/84-50/27 81/84-70/27