Subtract 21/80 from 8/24
8/24 - 21/80 is 17/240.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 24 × 10 = 240,
8/24 = 8 × 10/24 × 10 = 80/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
21/80 = 21 × 3/80 × 3 = 63/240 - Subtract the two like fractions:
80/240 - 63/240 = 80 - 63/240 = 17/240
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/24-21/80 8/24-42/80 8/48-21/80 8/24-63/80 8/72-21/80 40/24-21/80 56/24-21/80