Answers

Add 81/2 and 9/80

1^st number: 40 1/2, 2^nd number: 9/80

81/2 + 9/80 is 3249/80.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 2 and 80 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 2 × 40 = 80,
   81/2 = 81 × 40/2 × 40 = 3240/80
3. Likewise, for the 2nd fraction, since 80 × 1 = 80,
   9/80 = 9 × 1/80 × 1 = 9/80
4. Add the two like fractions:
   3240/80 + 9/80 = 3240 + 9/80 = 3249/80
5. So, 81/2 + 9/80 = 3249/80
   In mixed form: 4049/80

MathStep (Works offline)

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

Related: ⁸¹/₂+¹⁸/₈₀ ⁸¹/₄+⁹/₈₀ ⁸¹/₂+²⁷/₈₀ ⁸¹/₆+⁹/₈₀ ⁸¹/₂+⁴⁵/₈₀ ⁸¹/₁₀+⁹/₈₀ ⁸¹/₂+⁶³/₈₀ ⁸¹/₁₄+⁹/₈₀

Add Fractions Calculator