Subtract 20/84 from 27/4
1st number: 6 3/4, 2nd number: 20/84
27/4 - 20/84 is 547/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 4 × 21 = 84,
27/4 = 27 × 21/4 × 21 = 567/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
20/84 = 20 × 1/84 × 1 = 20/84 - Subtract the two like fractions:
567/84 - 20/84 = 567 - 20/84 = 547/84 - In mixed form: 643/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/4-20/84 27/4-40/84 27/8-20/84 81/4-20/84 27/4-60/84 27/12-20/84 27/20-20/84 27/28-20/84