Answers

Add 4/81 and 7/12

4/81 + 7/12 is 205/324.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 12 is 324
   
   Next, find the equivalent fraction of both fractional numbers with denominator 324
2. For the 1st fraction, since 81 × 4 = 324,
   4/81 = 4 × 4/81 × 4 = 16/324
3. Likewise, for the 2nd fraction, since 12 × 27 = 324,
   7/12 = 7 × 27/12 × 27 = 189/324
4. Add the two like fractions:
   16/324 + 189/324 = 16 + 189/324 = 205/324
5. So, 4/81 + 7/12 = 205/324

MathStep (Works offline)

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

Related: ⁸/₈₁+⁷/₁₂ ⁴/₈₁+¹⁴/₁₂ ⁴/₈₁+⁷/₂₄ ¹²/₈₁+⁷/₁₂ ⁴/₈₁+²¹/₁₂ ⁴/₈₁+⁷/₃₆ ²⁰/₈₁+⁷/₁₂ ⁴/₈₁+³⁵/₁₂ ⁴/₈₁+⁷/₆₀ ²⁸/₈₁+⁷/₁₂ ⁴/₈₁+⁴⁹/₁₂ ⁴/₈₁+⁷/₈₄

Add Fractions Calculator