Subtract 1/90 from 5/28
5/28 - 1/90 is 211/1260.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 90 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 28 × 45 = 1260,
5/28 = 5 × 45/28 × 45 = 225/1260 - Likewise, for the 2nd fraction, since 90 × 14 = 1260,
1/90 = 1 × 14/90 × 14 = 14/1260 - Subtract the two like fractions:
225/1260 - 14/1260 = 225 - 14/1260 = 211/1260
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/28-1/90 5/28-2/90 5/56-1/90 15/28-1/90 5/28-3/90 5/84-1/90 25/28-1/90 5/28-5/90 35/28-1/90 5/28-7/90