Subtract 21/7 from 14/27
1st number: 14/27, 2nd number: 3 0/7
14/27 - 21/7 is -67/27.
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,
14/27 = 14 × 7/27 × 7 = 98/189 - Likewise, for the 2nd fraction, since 7 × 27 = 189,
21/7 = 21 × 27/7 × 27 = 567/189 - Subtract the two like fractions:
98/189 - 567/189 = 98 - 567/189 = -469/189 - After reducing the fraction, the answer is -67/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/27-21/7 14/27-42/7 14/54-21/7 14/27-21/14 42/27-21/7 14/27-63/7 14/81-21/7 70/27-21/7 14/27-21/35 98/27-21/7 14/27-21/49