Subtract 30/27 from 27/84
1st number: 27/84, 2nd number: 1 3/27
27/84 - 30/27 is -199/252.
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,
27/84 = 27 × 9/84 × 9 = 243/756 - Likewise, for the 2nd fraction, since 27 × 28 = 756,
30/27 = 30 × 28/27 × 28 = 840/756 - Subtract the two like fractions:
243/756 - 840/756 = 243 - 840/756 = -597/756 - After reducing the fraction, the answer is -199/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/84-30/27 27/84-60/27 27/84-30/54 81/84-30/27 27/84-90/27 27/84-30/81