Subtract 20/8 from 27/4
1st number: 6 3/4, 2nd number: 2 4/8
27/4 - 20/8 is 17/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 8 is 8
Next, find the equivalent fraction of both fractional numbers with denominator 8 - For the 1st fraction, since 4 × 2 = 8,
27/4 = 27 × 2/4 × 2 = 54/8 - Likewise, for the 2nd fraction, since 8 × 1 = 8,
20/8 = 20 × 1/8 × 1 = 20/8 - Subtract the two like fractions:
54/8 - 20/8 = 54 - 20/8 = 34/8 - After reducing the fraction, the answer is 17/4
- In mixed form: 41/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/4-20/8 27/4-40/8 27/8-20/8 27/4-20/16 81/4-20/8 27/4-60/8 27/12-20/8 27/4-20/24 27/20-20/8 27/4-20/40 27/28-20/8 27/4-20/56