Subtract 8/20 from 9/25
9/25 - 8/20 is -1/25.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 20 is 100
Next, find the equivalent fraction of both fractional numbers with denominator 100 - For the 1st fraction, since 25 × 4 = 100,
9/25 = 9 × 4/25 × 4 = 36/100 - Likewise, for the 2nd fraction, since 20 × 5 = 100,
8/20 = 8 × 5/20 × 5 = 40/100 - Subtract the two like fractions:
36/100 - 40/100 = 36 - 40/100 = -4/100 - After reducing the fraction, the answer is -1/25
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/25-8/20 9/25-16/20 9/50-8/20 9/25-8/40 27/25-8/20 9/25-24/20 9/75-8/20 9/25-8/60 45/25-8/20 9/25-40/20 63/25-8/20 9/25-56/20