Subtract 18/84 from 28/27
1st number: 1 1/27, 2nd number: 18/84
28/27 - 18/84 is 311/378.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 84 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 27 × 28 = 756,
28/27 = 28 × 28/27 × 28 = 784/756 - Likewise, for the 2nd fraction, since 84 × 9 = 756,
18/84 = 18 × 9/84 × 9 = 162/756 - Subtract the two like fractions:
784/756 - 162/756 = 784 - 162/756 = 622/756 - After reducing the fraction, the answer is 311/378
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/27-18/84 28/27-36/84 28/54-18/84 84/27-18/84 28/27-54/84 28/81-18/84 28/27-90/84