Subtract 20/24 from 3/80
3/80 - 20/24 is -191/240.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 24 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 80 × 3 = 240,
3/80 = 3 × 3/80 × 3 = 9/240 - Likewise, for the 2nd fraction, since 24 × 10 = 240,
20/24 = 20 × 10/24 × 10 = 200/240 - Subtract the two like fractions:
9/240 - 200/240 = 9 - 200/240 = -191/240
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/80-20/24 3/80-40/24 3/80-20/48 9/80-20/24 3/80-60/24 3/80-20/72 15/80-20/24 21/80-20/24