Subtract 45/18 from 50/25
1st number: 2 0/25, 2nd number: 2 9/18
50/25 - 45/18 is -1/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 18 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 25 × 18 = 450,
50/25 = 50 × 18/25 × 18 = 900/450 - Likewise, for the 2nd fraction, since 18 × 25 = 450,
45/18 = 45 × 25/18 × 25 = 1125/450 - Subtract the two like fractions:
900/450 - 1125/450 = 900 - 1125/450 = -225/450 - After reducing the fraction, the answer is -1/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/25-90/18 50/25-45/36 50/75-45/18 50/25-45/54 50/25-45/90