Subtract 30/84 from 28/27
1st number: 1 1/27, 2nd number: 30/84
28/27 - 30/84 is 257/378.
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,
30/84 = 30 × 9/84 × 9 = 270/756 - Subtract the two like fractions:
784/756 - 270/756 = 784 - 270/756 = 514/756 - After reducing the fraction, the answer is 257/378
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/27-30/84 28/27-60/84 28/54-30/84 84/27-30/84 28/27-90/84 28/81-30/84