Subtract 8/90 from 12/18
12/18 - 8/90 is 26/45.
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,
12/18 = 12 × 5/18 × 5 = 60/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
8/90 = 8 × 1/90 × 1 = 8/90 - Subtract the two like fractions:
60/90 - 8/90 = 60 - 8/90 = 52/90 - After reducing the fraction, the answer is 26/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/18-8/90 12/18-16/90 12/36-8/90 36/18-8/90 12/18-24/90 12/54-8/90 60/18-8/90 12/18-40/90 12/90-8/90 84/18-8/90 12/18-56/90