Subtract 18/84 from 3/24
3/24 - 18/84 is -5/56.
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,
3/24 = 3 × 7/24 × 7 = 21/168 - Likewise, for the 2nd fraction, since 84 × 2 = 168,
18/84 = 18 × 2/84 × 2 = 36/168 - Subtract the two like fractions:
21/168 - 36/168 = 21 - 36/168 = -15/168 - After reducing the fraction, the answer is -5/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/24-18/84 3/24-36/84 3/48-18/84 9/24-18/84 3/24-54/84 3/72-18/84 15/24-18/84 3/24-90/84 21/24-18/84