Answers

Subtract 8/81 from 45/9

1^st number: 5 0/9, 2^nd number: 8/81

45/9 - 8/81 is 397/81.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 9 and 81 is 81
   
   Next, find the equivalent fraction of both fractional numbers with denominator 81
2. For the 1st fraction, since 9 × 9 = 81,
   45/9 = 45 × 9/9 × 9 = 405/81
3. Likewise, for the 2nd fraction, since 81 × 1 = 81,
   8/81 = 8 × 1/81 × 1 = 8/81
4. Subtract the two like fractions:
   405/81 - 8/81 = 405 - 8/81 = 397/81
5. In mixed form: 473/81

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad

Related: ⁹⁰/₉-⁸/₈₁ ⁴⁵/₉-¹⁶/₈₁ ⁴⁵/₁₈-⁸/₈₁ ⁴⁵/₉-²⁴/₈₁ ⁴⁵/₂₇-⁸/₈₁ ⁴⁵/₉-⁴⁰/₈₁ ⁴⁵/₉-⁵⁶/₈₁ ⁴⁵/₆₃-⁸/₈₁

Subtract Fractions Calculator