Subtract 25/50 from 10/80
10/80 - 25/50 is -3/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 50 is 400
Next, find the equivalent fraction of both fractional numbers with denominator 400 - For the 1st fraction, since 80 × 5 = 400,
10/80 = 10 × 5/80 × 5 = 50/400 - Likewise, for the 2nd fraction, since 50 × 8 = 400,
25/50 = 25 × 8/50 × 8 = 200/400 - Subtract the two like fractions:
50/400 - 200/400 = 50 - 200/400 = -150/400 - After reducing the fraction, the answer is -3/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/80-25/50 30/80-25/50 10/80-75/50 50/80-25/50 70/80-25/50