Answers

Add 9/81 and 75/40

1^st number: 9/81, 2^nd number: 1 35/40

9/81 + 75/40 is 143/72.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 40 is 3240
   
   Next, find the equivalent fraction of both fractional numbers with denominator 3240
2. For the 1st fraction, since 81 × 40 = 3240,
   9/81 = 9 × 40/81 × 40 = 360/3240
3. Likewise, for the 2nd fraction, since 40 × 81 = 3240,
   75/40 = 75 × 81/40 × 81 = 6075/3240
4. Add the two like fractions:
   360/3240 + 6075/3240 = 360 + 6075/3240 = 6435/3240
5. 6435/3240 simplified gives 143/72
6. So, 9/81 + 75/40 = 143/72
   In mixed form: 171/72

MathStep (Works offline)

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

Related: ¹⁸/₈₁+⁷⁵/₄₀ ⁹/₈₁+⁷⁵/₈₀ ²⁷/₈₁+⁷⁵/₄₀ ⁴⁵/₈₁+⁷⁵/₄₀ ⁶³/₈₁+⁷⁵/₄₀

Add Fractions Calculator