Subtract 1/90 from 3/75
3/75 - 1/90 is 13/450.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 90 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 75 × 6 = 450,
3/75 = 3 × 6/75 × 6 = 18/450 - Likewise, for the 2nd fraction, since 90 × 5 = 450,
1/90 = 1 × 5/90 × 5 = 5/450 - Subtract the two like fractions:
18/450 - 5/450 = 18 - 5/450 = 13/450
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/75-1/90 3/75-2/90 9/75-1/90 3/75-3/90 15/75-1/90 3/75-5/90 21/75-1/90 3/75-7/90