Subtract 63/7 from 27/84
1st number: 27/84, 2nd number: 9 0/7
27/84 - 63/7 is -243/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 7 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
27/84 = 27 × 1/84 × 1 = 27/84 - Likewise, for the 2nd fraction, since 7 × 12 = 84,
63/7 = 63 × 12/7 × 12 = 756/84 - Subtract the two like fractions:
27/84 - 756/84 = 27 - 756/84 = -729/84 - After reducing the fraction, the answer is -243/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/84-63/7 27/84-63/14 81/84-63/7 27/84-63/21 27/84-63/35 27/84-63/49