Subtract 45/80 from 4/25
4/25 - 45/80 is -161/400.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 80 is 400
Next, find the equivalent fraction of both fractional numbers with denominator 400 - For the 1st fraction, since 25 × 16 = 400,
4/25 = 4 × 16/25 × 16 = 64/400 - Likewise, for the 2nd fraction, since 80 × 5 = 400,
45/80 = 45 × 5/80 × 5 = 225/400 - Subtract the two like fractions:
64/400 - 225/400 = 64 - 225/400 = -161/400
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/25-45/80 4/25-90/80 4/50-45/80 12/25-45/80 4/75-45/80 20/25-45/80 28/25-45/80