Subtract 32/27 from 2/21
1st number: 2/21, 2nd number: 1 5/27
2/21 - 32/27 is -206/189.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 27 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 21 × 9 = 189,
2/21 = 2 × 9/21 × 9 = 18/189 - Likewise, for the 2nd fraction, since 27 × 7 = 189,
32/27 = 32 × 7/27 × 7 = 224/189 - Subtract the two like fractions:
18/189 - 224/189 = 18 - 224/189 = -206/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/21-32/27 2/21-64/27 2/42-32/27 2/21-32/54 6/21-32/27 2/21-96/27 2/63-32/27 2/21-32/81 10/21-32/27 14/21-32/27