Answers

Add 3/4 and 20/81

3/4 + 20/81 is 323/324.

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,
   3/4 = 3 × 81/4 × 81 = 243/324
3. Likewise, for the 2nd fraction, since 81 × 4 = 324,
   20/81 = 20 × 4/81 × 4 = 80/324
4. Add the two like fractions:
   243/324 + 80/324 = 243 + 80/324 = 323/324
5. So, 3/4 + 20/81 = 323/324

MathStep (Works offline)

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

Related: ⁶/₄+²⁰/₈₁ ³/₄+⁴⁰/₈₁ ³/₈+²⁰/₈₁ ⁹/₄+²⁰/₈₁ ³/₄+⁶⁰/₈₁ ³/₁₂+²⁰/₈₁ ¹⁵/₄+²⁰/₈₁ ³/₂₀+²⁰/₈₁ ²¹/₄+²⁰/₈₁ ³/₂₈+²⁰/₈₁

Add Fractions Calculator