Answers

Add 81/90 and 6/81

81/90 + 6/81 is 263/270.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 81 is 810
   
   Next, find the equivalent fraction of both fractional numbers with denominator 810
2. For the 1st fraction, since 90 × 9 = 810,
   81/90 = 81 × 9/90 × 9 = 729/810
3. Likewise, for the 2nd fraction, since 81 × 10 = 810,
   6/81 = 6 × 10/81 × 10 = 60/810
4. Add the two like fractions:
   729/810 + 60/810 = 729 + 60/810 = 789/810
5. 789/810 simplified gives 263/270
6. So, 81/90 + 6/81 = 263/270

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