Answers

Add 4/90 and 27/81

4/90 + 27/81 is 17/45.

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,
   4/90 = 4 × 9/90 × 9 = 36/810
3. Likewise, for the 2nd fraction, since 81 × 10 = 810,
   27/81 = 27 × 10/81 × 10 = 270/810
4. Add the two like fractions:
   36/810 + 270/810 = 36 + 270/810 = 306/810
5. 306/810 simplified gives 17/45
6. So, 4/90 + 27/81 = 17/45

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