Subtract 2/50 from 1/90
1/90 - 2/50 is -13/450.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 50 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 90 × 5 = 450,
1/90 = 1 × 5/90 × 5 = 5/450 - Likewise, for the 2nd fraction, since 50 × 9 = 450,
2/50 = 2 × 9/50 × 9 = 18/450 - Subtract the two like fractions:
5/450 - 18/450 = 5 - 18/450 = -13/450
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/90-2/50 1/90-4/50 3/90-2/50 1/90-6/50 5/90-2/50 1/90-10/50 7/90-2/50 1/90-14/50