Answers

Add 45/4 and 18/81

1^st number: 11 1/4, 2^nd number: 18/81

45/4 + 18/81 is 413/36.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 4 and 81 is 324
   
   Next, find the equivalent fraction of both fractional numbers with denominator 324
2. For the 1st fraction, since 4 × 81 = 324,
   45/4 = 45 × 81/4 × 81 = 3645/324
3. Likewise, for the 2nd fraction, since 81 × 4 = 324,
   18/81 = 18 × 4/81 × 4 = 72/324
4. Add the two like fractions:
   3645/324 + 72/324 = 3645 + 72/324 = 3717/324
5. 3717/324 simplified gives 413/36
6. So, 45/4 + 18/81 = 413/36
   In mixed form: 1117/36

MathStep (Works offline)

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

Related: ⁹⁰/₄+¹⁸/₈₁ ⁴⁵/₄+³⁶/₈₁ ⁴⁵/₈+¹⁸/₈₁ ⁴⁵/₄+⁵⁴/₈₁ ⁴⁵/₁₂+¹⁸/₈₁ ⁴⁵/₄+⁹⁰/₈₁ ⁴⁵/₂₀+¹⁸/₈₁ ⁴⁵/₂₈+¹⁸/₈₁

Add Fractions Calculator