Answers

Add 81/5 and 8/20

1^st number: 16 1/5, 2^nd number: 8/20

81/5 + 8/20 is 83/5.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 5 and 20 is 20
   
   Next, find the equivalent fraction of both fractional numbers with denominator 20
2. For the 1st fraction, since 5 × 4 = 20,
   81/5 = 81 × 4/5 × 4 = 324/20
3. Likewise, for the 2nd fraction, since 20 × 1 = 20,
   8/20 = 8 × 1/20 × 1 = 8/20
4. Add the two like fractions:
   324/20 + 8/20 = 324 + 8/20 = 332/20
5. 332/20 simplified gives 83/5
6. So, 81/5 + 8/20 = 83/5
   In mixed form: 163/5

MathStep (Works offline)

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

Related: ⁸¹/₅+¹⁶/₂₀ ⁸¹/₁₀+⁸/₂₀ ⁸¹/₅+⁸/₄₀ ⁸¹/₅+²⁴/₂₀ ⁸¹/₁₅+⁸/₂₀ ⁸¹/₅+⁸/₆₀ ⁸¹/₅+⁴⁰/₂₀ ⁸¹/₂₅+⁸/₂₀ ⁸¹/₅+⁵⁶/₂₀ ⁸¹/₃₅+⁸/₂₀

Add Fractions Calculator