Subtract 45/80 from 6/12
6/12 - 45/80 is -1/16.
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,
45/80 = 45 × 3/80 × 3 = 135/240 - Subtract the two like fractions:
120/240 - 135/240 = 120 - 135/240 = -15/240 - After reducing the fraction, the answer is -1/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/12-90/80 6/24-45/80 18/12-45/80 6/36-45/80 30/12-45/80 6/60-45/80 42/12-45/80 6/84-45/80