Subtract 63/27 from 75/84
1st number: 75/84, 2nd number: 2 9/27
75/84 - 63/27 is -121/84.
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,
75/84 = 75 × 9/84 × 9 = 675/756 - Likewise, for the 2nd fraction, since 27 × 28 = 756,
63/27 = 63 × 28/27 × 28 = 1764/756 - Subtract the two like fractions:
675/756 - 1764/756 = 675 - 1764/756 = -1089/756 - After reducing the fraction, the answer is -121/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/84-63/54 75/84-63/81