Subtract 6/18 from 80/90
80/90 - 6/18 is 5/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
80/90 = 80 × 1/90 × 1 = 80/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
6/18 = 6 × 5/18 × 5 = 30/90 - Subtract the two like fractions:
80/90 - 30/90 = 80 - 30/90 = 50/90 - After reducing the fraction, the answer is 5/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/90-12/18 80/90-6/36 80/90-6/54 80/90-30/18 80/90-6/90 80/90-42/18