Subtract 27/24 from 18/84
1st number: 18/84, 2nd number: 1 3/24
18/84 - 27/24 is -51/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 24 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 84 × 2 = 168,
18/84 = 18 × 2/84 × 2 = 36/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
27/24 = 27 × 7/24 × 7 = 189/168 - Subtract the two like fractions:
36/168 - 189/168 = 36 - 189/168 = -153/168 - After reducing the fraction, the answer is -51/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/84-27/24 18/84-54/24 18/84-27/48 54/84-27/24 18/84-81/24 18/84-27/72 90/84-27/24