Subtract 7/27 from 15/7
1st number: 2 1/7, 2nd number: 7/27
15/7 - 7/27 is 356/189.
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,
15/7 = 15 × 27/7 × 27 = 405/189 - Likewise, for the 2nd fraction, since 27 × 7 = 189,
7/27 = 7 × 7/27 × 7 = 49/189 - Subtract the two like fractions:
405/189 - 49/189 = 405 - 49/189 = 356/189 - In mixed form: 1167/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/7-7/27 15/7-14/27 15/14-7/27 15/7-7/54 45/7-7/27 15/7-21/27 15/21-7/27 15/7-7/81 75/7-7/27 15/7-35/27 15/35-7/27 15/7-49/27 15/49-7/27