Answers

Add 60/8 and 90/81

1^st number: 7 4/8, 2^nd number: 1 9/81

60/8 + 90/81 is 155/18.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 8 and 81 is 648
   
   Next, find the equivalent fraction of both fractional numbers with denominator 648
2. For the 1st fraction, since 8 × 81 = 648,
   60/8 = 60 × 81/8 × 81 = 4860/648
3. Likewise, for the 2nd fraction, since 81 × 8 = 648,
   90/81 = 90 × 8/81 × 8 = 720/648
4. Add the two like fractions:
   4860/648 + 720/648 = 4860 + 720/648 = 5580/648
5. 5580/648 simplified gives 155/18
6. So, 60/8 + 90/81 = 155/18
   In mixed form: 811/18

MathStep (Works offline)

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

Related: ⁶⁰/₁₆+⁹⁰/₈₁ ⁶⁰/₂₄+⁹⁰/₈₁ ⁶⁰/₄₀+⁹⁰/₈₁ ⁶⁰/₅₆+⁹⁰/₈₁

Add Fractions Calculator