Answers

Add 5/4 and 84/81

1^st number: 1 1/4, 2^nd number: 1 3/81

5/4 + 84/81 is 247/108.

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,
   5/4 = 5 × 81/4 × 81 = 405/324
3. Likewise, for the 2nd fraction, since 81 × 4 = 324,
   84/81 = 84 × 4/81 × 4 = 336/324
4. Add the two like fractions:
   405/324 + 336/324 = 405 + 336/324 = 741/324
5. 741/324 simplified gives 247/108
6. So, 5/4 + 84/81 = 247/108
   In mixed form: 231/108

MathStep (Works offline)

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

Related: ¹⁰/₄+⁸⁴/₈₁ ⁵/₈+⁸⁴/₈₁ ¹⁵/₄+⁸⁴/₈₁ ⁵/₁₂+⁸⁴/₈₁ ²⁵/₄+⁸⁴/₈₁ ⁵/₂₀+⁸⁴/₈₁ ³⁵/₄+⁸⁴/₈₁ ⁵/₂₈+⁸⁴/₈₁

Add Fractions Calculator