Subtract 25/90 from 4/5
4/5 - 25/90 is 47/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 5 × 18 = 90,
4/5 = 4 × 18/5 × 18 = 72/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
25/90 = 25 × 1/90 × 1 = 25/90 - Subtract the two like fractions:
72/90 - 25/90 = 72 - 25/90 = 47/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/5-25/90 4/5-50/90 4/10-25/90 12/5-25/90 4/5-75/90 4/15-25/90 20/5-25/90 4/25-25/90 28/5-25/90 4/35-25/90