Subtract 20/25 from 9/20
9/20 - 20/25 is -7/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 25 is 100
Next, find the equivalent fraction of both fractional numbers with denominator 100 - For the 1st fraction, since 20 × 5 = 100,
9/20 = 9 × 5/20 × 5 = 45/100 - Likewise, for the 2nd fraction, since 25 × 4 = 100,
20/25 = 20 × 4/25 × 4 = 80/100 - Subtract the two like fractions:
45/100 - 80/100 = 45 - 80/100 = -35/100 - After reducing the fraction, the answer is -7/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/20-20/25 9/20-40/25 9/40-20/25 9/20-20/50 27/20-20/25 9/20-60/25 9/60-20/25 9/20-20/75 45/20-20/25 63/20-20/25