Answers

Add 98/80 and 5/81

1^st number: 1 18/80, 2^nd number: 5/81

98/80 + 5/81 is 4169/3240.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 81 is 6480
   
   Next, find the equivalent fraction of both fractional numbers with denominator 6480
2. For the 1st fraction, since 80 × 81 = 6480,
   98/80 = 98 × 81/80 × 81 = 7938/6480
3. Likewise, for the 2nd fraction, since 81 × 80 = 6480,
   5/81 = 5 × 80/81 × 80 = 400/6480
4. Add the two like fractions:
   7938/6480 + 400/6480 = 7938 + 400/6480 = 8338/6480
5. 8338/6480 simplified gives 4169/3240
6. So, 98/80 + 5/81 = 4169/3240
   In mixed form: 1929/3240

MathStep (Works offline)

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

Related: ⁹⁸/₈₀+¹⁰/₈₁ ⁹⁸/₈₀+¹⁵/₈₁ ⁹⁸/₈₀+²⁵/₈₁ ⁹⁸/₈₀+³⁵/₈₁

Add Fractions Calculator