Answers

Add 40/81 and 90/30

1^st number: 40/81, 2^nd number: 3 0/30

40/81 + 90/30 is 283/81.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 30 is 810
   
   Next, find the equivalent fraction of both fractional numbers with denominator 810
2. For the 1st fraction, since 81 × 10 = 810,
   40/81 = 40 × 10/81 × 10 = 400/810
3. Likewise, for the 2nd fraction, since 30 × 27 = 810,
   90/30 = 90 × 27/30 × 27 = 2430/810
4. Add the two like fractions:
   400/810 + 2430/810 = 400 + 2430/810 = 2830/810
5. 2830/810 simplified gives 283/81
6. So, 40/81 + 90/30 = 283/81
   In mixed form: 340/81

MathStep (Works offline)

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

Related: ⁸⁰/₈₁+⁹⁰/₃₀ ⁴⁰/₈₁+⁹⁰/₆₀

Add Fractions Calculator