Subtract 5/20 from 9/4
1st number: 2 1/4, 2nd number: 5/20
9/4 - 5/20 is 2/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 4 × 5 = 20,
9/4 = 9 × 5/4 × 5 = 45/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
5/20 = 5 × 1/20 × 1 = 5/20 - Subtract the two like fractions:
45/20 - 5/20 = 45 - 5/20 = 40/20 - After reducing the fraction, the answer is 2/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/4-5/20 9/4-10/20 9/8-5/20 9/4-5/40 27/4-5/20 9/4-15/20 9/12-5/20 9/4-5/60 45/4-5/20 9/4-25/20 9/20-5/20 63/4-5/20 9/4-35/20 9/28-5/20