Subtract 4/27 from 1/7
1/7 - 4/27 is -1/189.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 27 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 7 × 27 = 189,
1/7 = 1 × 27/7 × 27 = 27/189 - Likewise, for the 2nd fraction, since 27 × 7 = 189,
4/27 = 4 × 7/27 × 7 = 28/189 - Subtract the two like fractions:
27/189 - 28/189 = 27 - 28/189 = -1/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/7-4/27 1/7-8/27 1/14-4/27 1/7-4/54 3/7-4/27 1/7-12/27 1/21-4/27 1/7-4/81 5/7-4/27 1/7-20/27 1/35-4/27 1/7-28/27 1/49-4/27