Subtract 7/4 from 27/20
1st number: 1 7/20, 2nd number: 1 3/4
27/20 - 7/4 is -2/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 4 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 20 × 1 = 20,
27/20 = 27 × 1/20 × 1 = 27/20 - Likewise, for the 2nd fraction, since 4 × 5 = 20,
7/4 = 7 × 5/4 × 5 = 35/20 - Subtract the two like fractions:
27/20 - 35/20 = 27 - 35/20 = -8/20 - After reducing the fraction, the answer is -2/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/20-7/4 27/20-14/4 27/40-7/4 27/20-7/8 81/20-7/4 27/20-21/4 27/60-7/4 27/20-7/12 27/20-35/4 27/20-7/20 27/20-49/4 27/20-7/28