Subtract 25/80 from 2/18
2/18 - 25/80 is -29/144.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 18 × 40 = 720,
2/18 = 2 × 40/18 × 40 = 80/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
25/80 = 25 × 9/80 × 9 = 225/720 - Subtract the two like fractions:
80/720 - 225/720 = 80 - 225/720 = -145/720 - After reducing the fraction, the answer is -29/144
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/18-25/80 2/18-50/80 2/36-25/80 6/18-25/80 2/18-75/80 2/54-25/80 10/18-25/80 2/90-25/80 14/18-25/80