Subtract 25/90 from 8/18
8/18 - 25/90 is 1/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
8/18 = 8 × 5/18 × 5 = 40/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
25/90 = 25 × 1/90 × 1 = 25/90 - Subtract the two like fractions:
40/90 - 25/90 = 40 - 25/90 = 15/90 - After reducing the fraction, the answer is 1/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/18-25/90 8/18-50/90 8/36-25/90 24/18-25/90 8/18-75/90 8/54-25/90 40/18-25/90 8/90-25/90 56/18-25/90