Subtract 5/4 from 7/20
1st number: 7/20, 2nd number: 1 1/4
7/20 - 5/4 is -9/10.
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,
7/20 = 7 × 1/20 × 1 = 7/20 - Likewise, for the 2nd fraction, since 4 × 5 = 20,
5/4 = 5 × 5/4 × 5 = 25/20 - Subtract the two like fractions:
7/20 - 25/20 = 7 - 25/20 = -18/20 - After reducing the fraction, the answer is -9/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/20-5/4 7/20-10/4 7/40-5/4 7/20-5/8 21/20-5/4 7/20-15/4 7/60-5/4 7/20-5/12 35/20-5/4 7/20-25/4 7/20-5/20 49/20-5/4 7/20-35/4 7/20-5/28