Answers

Add 45/15 and 24/81

1^st number: 3 0/15, 2^nd number: 24/81

45/15 + 24/81 is 89/27.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 81 is 405
   
   Next, find the equivalent fraction of both fractional numbers with denominator 405
2. For the 1st fraction, since 15 × 27 = 405,
   45/15 = 45 × 27/15 × 27 = 1215/405
3. Likewise, for the 2nd fraction, since 81 × 5 = 405,
   24/81 = 24 × 5/81 × 5 = 120/405
4. Add the two like fractions:
   1215/405 + 120/405 = 1215 + 120/405 = 1335/405
5. 1335/405 simplified gives 89/27
6. So, 45/15 + 24/81 = 89/27
   In mixed form: 38/27

MathStep (Works offline)

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

Related: ⁹⁰/₁₅+²⁴/₈₁ ⁴⁵/₁₅+⁴⁸/₈₁ ⁴⁵/₃₀+²⁴/₈₁ ⁴⁵/₁₅+⁷²/₈₁ ⁴⁵/₇₅+²⁴/₈₁

Add Fractions Calculator