Answers

Add 9/20 and 81/5

1^st number: 9/20, 2^nd number: 16 1/5

9/20 + 81/5 is 333/20.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 5 is 20
   
   Next, find the equivalent fraction of both fractional numbers with denominator 20
2. For the 1st fraction, since 20 × 1 = 20,
   9/20 = 9 × 1/20 × 1 = 9/20
3. Likewise, for the 2nd fraction, since 5 × 4 = 20,
   81/5 = 81 × 4/5 × 4 = 324/20
4. Add the two like fractions:
   9/20 + 324/20 = 9 + 324/20 = 333/20
5. So, 9/20 + 81/5 = 333/20
   In mixed form: 1613/20

MathStep (Works offline)

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

Related: ¹⁸/₂₀+⁸¹/₅ ⁹/₄₀+⁸¹/₅ ⁹/₂₀+⁸¹/₁₀ ²⁷/₂₀+⁸¹/₅ ⁹/₆₀+⁸¹/₅ ⁹/₂₀+⁸¹/₁₅ ⁴⁵/₂₀+⁸¹/₅ ⁹/₂₀+⁸¹/₂₅ ⁶³/₂₀+⁸¹/₅ ⁹/₂₀+⁸¹/₃₅

Add Fractions Calculator