Subtract 56/21 from 4/27
1st number: 4/27, 2nd number: 2 14/21
4/27 - 56/21 is -68/27.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 21 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 27 × 7 = 189,
4/27 = 4 × 7/27 × 7 = 28/189 - Likewise, for the 2nd fraction, since 21 × 9 = 189,
56/21 = 56 × 9/21 × 9 = 504/189 - Subtract the two like fractions:
28/189 - 504/189 = 28 - 504/189 = -476/189 - After reducing the fraction, the answer is -68/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/27-56/21 4/54-56/21 4/27-56/42 12/27-56/21 4/81-56/21 4/27-56/63 20/27-56/21 28/27-56/21