Answers

Subtract 2/81 from 28/5

1^st number: 5 3/5, 2^nd number: 2/81

28/5 - 2/81 is 2258/405.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 5 and 81 is 405
   
   Next, find the equivalent fraction of both fractional numbers with denominator 405
2. For the 1st fraction, since 5 × 81 = 405,
   28/5 = 28 × 81/5 × 81 = 2268/405
3. Likewise, for the 2nd fraction, since 81 × 5 = 405,
   2/81 = 2 × 5/81 × 5 = 10/405
4. Subtract the two like fractions:
   2268/405 - 10/405 = 2268 - 10/405 = 2258/405
5. In mixed form: 5233/405

MathStep (Works offline)

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

Related: ⁵⁶/₅-²/₈₁ ²⁸/₅-⁴/₈₁ ²⁸/₁₀-²/₈₁ ⁸⁴/₅-²/₈₁ ²⁸/₅-⁶/₈₁ ²⁸/₁₅-²/₈₁ ²⁸/₅-¹⁰/₈₁ ²⁸/₂₅-²/₈₁ ²⁸/₅-¹⁴/₈₁ ²⁸/₃₅-²/₈₁

Subtract Fractions Calculator