Subtract 36/27 from 15/7
1st number: 2 1/7, 2nd number: 1 9/27
15/7 - 36/27 is 17/21.
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,
36/27 = 36 × 7/27 × 7 = 252/189 - Subtract the two like fractions:
405/189 - 252/189 = 405 - 252/189 = 153/189 - After reducing the fraction, the answer is 17/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/7-36/27 15/7-72/27 15/14-36/27 15/7-36/54 45/7-36/27 15/21-36/27 15/7-36/81 75/7-36/27 15/35-36/27 15/49-36/27