Subtract 27/8 from 10/20
1st number: 10/20, 2nd number: 3 3/8
10/20 - 27/8 is -23/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 20 × 2 = 40,
10/20 = 10 × 2/20 × 2 = 20/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
27/8 = 27 × 5/8 × 5 = 135/40 - Subtract the two like fractions:
20/40 - 135/40 = 20 - 135/40 = -115/40 - After reducing the fraction, the answer is -23/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/20-54/8 10/40-27/8 10/20-27/16 30/20-27/8 10/20-81/8 10/60-27/8 10/20-27/24 50/20-27/8 10/20-27/40 70/20-27/8 10/20-27/56