Subtract 4/27 from 12/84
12/84 - 4/27 is -1/189.
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,
12/84 = 12 × 9/84 × 9 = 108/756 - Likewise, for the 2nd fraction, since 27 × 28 = 756,
4/27 = 4 × 28/27 × 28 = 112/756 - Subtract the two like fractions:
108/756 - 112/756 = 108 - 112/756 = -4/756 - After reducing the fraction, the answer is -1/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/84-4/27 12/84-8/27 12/84-4/54 36/84-4/27 12/84-12/27 12/84-4/81 60/84-4/27 12/84-20/27 12/84-28/27