Subtract 25/27 from 7/84
7/84 - 25/27 is -91/108.
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,
7/84 = 7 × 9/84 × 9 = 63/756 - Likewise, for the 2nd fraction, since 27 × 28 = 756,
25/27 = 25 × 28/27 × 28 = 700/756 - Subtract the two like fractions:
63/756 - 700/756 = 63 - 700/756 = -637/756 - After reducing the fraction, the answer is -91/108
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/84-25/27 7/84-50/27 7/84-25/54 21/84-25/27 7/84-75/27 7/84-25/81 35/84-25/27 49/84-25/27