Subtract 18/45 from 4/50
4/50 - 18/45 is -8/25.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 45 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 50 × 9 = 450,
4/50 = 4 × 9/50 × 9 = 36/450 - Likewise, for the 2nd fraction, since 45 × 10 = 450,
18/45 = 18 × 10/45 × 10 = 180/450 - Subtract the two like fractions:
36/450 - 180/450 = 36 - 180/450 = -144/450 - After reducing the fraction, the answer is -8/25
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/50-18/45 4/50-36/45 4/50-18/90 12/50-18/45 4/50-54/45 20/50-18/45 4/50-90/45 28/50-18/45