Subtract 30/27 from 14/21
1st number: 14/21, 2nd number: 1 3/27
14/21 - 30/27 is -4/9.
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,
14/21 = 14 × 9/21 × 9 = 126/189 - Likewise, for the 2nd fraction, since 27 × 7 = 189,
30/27 = 30 × 7/27 × 7 = 210/189 - Subtract the two like fractions:
126/189 - 210/189 = 126 - 210/189 = -84/189 - After reducing the fraction, the answer is -4/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/21-30/27 14/21-60/27 14/42-30/27 14/21-30/54 42/21-30/27 14/21-90/27 14/63-30/27 14/21-30/81 70/21-30/27 98/21-30/27