Subtract 4/90 from 5/50
5/50 - 4/90 is 1/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 90 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 50 × 9 = 450,
5/50 = 5 × 9/50 × 9 = 45/450 - Likewise, for the 2nd fraction, since 90 × 5 = 450,
4/90 = 4 × 5/90 × 5 = 20/450 - Subtract the two like fractions:
45/450 - 20/450 = 45 - 20/450 = 25/450 - After reducing the fraction, the answer is 1/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/50-4/90 5/50-8/90 15/50-4/90 5/50-12/90 25/50-4/90 5/50-20/90 35/50-4/90 5/50-28/90