Subtract 21/84 from 8/24
8/24 - 21/84 is 1/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 84 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 24 × 7 = 168,
8/24 = 8 × 7/24 × 7 = 56/168 - Likewise, for the 2nd fraction, since 84 × 2 = 168,
21/84 = 21 × 2/84 × 2 = 42/168 - Subtract the two like fractions:
56/168 - 42/168 = 56 - 42/168 = 14/168 - After reducing the fraction, the answer is 1/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/24-21/84 8/24-42/84 8/48-21/84 8/24-63/84 8/72-21/84 40/24-21/84 56/24-21/84