Answers

Add 84/81 and 15/36

1^st number: 1 3/81, 2^nd number: 15/36

84/81 + 15/36 is 157/108.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 36 is 324
   
   Next, find the equivalent fraction of both fractional numbers with denominator 324
2. For the 1st fraction, since 81 × 4 = 324,
   84/81 = 84 × 4/81 × 4 = 336/324
3. Likewise, for the 2nd fraction, since 36 × 9 = 324,
   15/36 = 15 × 9/36 × 9 = 135/324
4. Add the two like fractions:
   336/324 + 135/324 = 336 + 135/324 = 471/324
5. 471/324 simplified gives 157/108
6. So, 84/81 + 15/36 = 157/108
   In mixed form: 149/108

MathStep (Works offline)

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

Related: ⁸⁴/₈₁+³⁰/₃₆ ⁸⁴/₈₁+¹⁵/₇₂ ⁸⁴/₈₁+⁴⁵/₃₆ ⁸⁴/₈₁+⁷⁵/₃₆

Add Fractions Calculator