Subtract 18/80 from 6/12
6/12 - 18/80 is 11/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 12 × 20 = 240,
6/12 = 6 × 20/12 × 20 = 120/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
18/80 = 18 × 3/80 × 3 = 54/240 - Subtract the two like fractions:
120/240 - 54/240 = 120 - 54/240 = 66/240 - After reducing the fraction, the answer is 11/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/12-36/80 6/24-18/80 18/12-18/80 6/12-54/80 6/36-18/80 30/12-18/80 6/12-90/80 6/60-18/80 42/12-18/80 6/84-18/80