Subtract 12/80 from 2/18
2/18 - 12/80 is -7/180.
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,
12/80 = 12 × 9/80 × 9 = 108/720 - Subtract the two like fractions:
80/720 - 108/720 = 80 - 108/720 = -28/720 - After reducing the fraction, the answer is -7/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/18-12/80 2/18-24/80 2/36-12/80 6/18-12/80 2/18-36/80 2/54-12/80 10/18-12/80 2/18-60/80 2/90-12/80 14/18-12/80 2/18-84/80