Subtract 45/90 from 1/25
1/25 - 45/90 is -23/50.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 90 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 25 × 18 = 450,
1/25 = 1 × 18/25 × 18 = 18/450 - Likewise, for the 2nd fraction, since 90 × 5 = 450,
45/90 = 45 × 5/90 × 5 = 225/450 - Subtract the two like fractions:
18/450 - 225/450 = 18 - 225/450 = -207/450 - After reducing the fraction, the answer is -23/50
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/25-45/90 1/50-45/90 3/25-45/90 1/75-45/90 5/25-45/90 7/25-45/90