Subtract 5/7 from 7/27
7/27 - 5/7 is -86/189.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 7 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 27 × 7 = 189,
7/27 = 7 × 7/27 × 7 = 49/189 - Likewise, for the 2nd fraction, since 7 × 27 = 189,
5/7 = 5 × 27/7 × 27 = 135/189 - Subtract the two like fractions:
49/189 - 135/189 = 49 - 135/189 = -86/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/27-5/7 7/27-10/7 7/54-5/7 7/27-5/14 21/27-5/7 7/27-15/7 7/81-5/7 7/27-5/21 35/27-5/7 7/27-25/7 7/27-5/35 49/27-5/7 7/27-35/7 7/27-5/49