Subtract 30/27 from 9/7
1st number: 1 2/7, 2nd number: 1 3/27
9/7 - 30/27 is 11/63.
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,
9/7 = 9 × 27/7 × 27 = 243/189 - Likewise, for the 2nd fraction, since 27 × 7 = 189,
30/27 = 30 × 7/27 × 7 = 210/189 - Subtract the two like fractions:
243/189 - 210/189 = 243 - 210/189 = 33/189 - After reducing the fraction, the answer is 11/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/7-30/27 9/7-60/27 9/14-30/27 9/7-30/54 27/7-30/27 9/7-90/27 9/21-30/27 9/7-30/81 45/7-30/27 9/35-30/27 63/7-30/27 9/49-30/27