Subtract 9/81 from 27/2
1st number: 13 1/2, 2nd number: 9/81
27/2 - 9/81 is 241/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 81 is 162
Next, find the equivalent fraction of both fractional numbers with denominator 162 - For the 1st fraction, since 2 × 81 = 162,
27/2 = 27 × 81/2 × 81 = 2187/162 - Likewise, for the 2nd fraction, since 81 × 2 = 162,
9/81 = 9 × 2/81 × 2 = 18/162 - Subtract the two like fractions:
2187/162 - 18/162 = 2187 - 18/162 = 2169/162 - After reducing the fraction, the answer is 241/18
- In mixed form: 137/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/2-9/81 27/2-18/81 27/4-9/81 81/2-9/81 27/2-27/81 27/6-9/81 27/2-45/81 27/10-9/81 27/2-63/81 27/14-9/81