Subtract 8/18 from 2/80
2/80 - 8/18 is -151/360.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 18 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
2/80 = 2 × 9/80 × 9 = 18/720 - Likewise, for the 2nd fraction, since 18 × 40 = 720,
8/18 = 8 × 40/18 × 40 = 320/720 - Subtract the two like fractions:
18/720 - 320/720 = 18 - 320/720 = -302/720 - After reducing the fraction, the answer is -151/360
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/80-8/18 2/80-16/18 2/80-8/36 6/80-8/18 2/80-24/18 2/80-8/54 10/80-8/18 2/80-40/18 2/80-8/90 14/80-8/18 2/80-56/18