Subtract 1/27 from 18/84
18/84 - 1/27 is 67/378.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 27 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 84 × 9 = 756,
18/84 = 18 × 9/84 × 9 = 162/756 - Likewise, for the 2nd fraction, since 27 × 28 = 756,
1/27 = 1 × 28/27 × 28 = 28/756 - Subtract the two like fractions:
162/756 - 28/756 = 162 - 28/756 = 134/756 - After reducing the fraction, the answer is 67/378
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/84-1/27 18/84-2/27 18/84-1/54 54/84-1/27 18/84-3/27 18/84-1/81 90/84-1/27 18/84-5/27 18/84-7/27