Answers

Add 5/70 and 54/81

5/70 + 54/81 is 31/42.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 81 is 5670
   
   Next, find the equivalent fraction of both fractional numbers with denominator 5670
2. For the 1st fraction, since 70 × 81 = 5670,
   5/70 = 5 × 81/70 × 81 = 405/5670
3. Likewise, for the 2nd fraction, since 81 × 70 = 5670,
   54/81 = 54 × 70/81 × 70 = 3780/5670
4. Add the two like fractions:
   405/5670 + 3780/5670 = 405 + 3780/5670 = 4185/5670
5. 4185/5670 simplified gives 31/42
6. So, 5/70 + 54/81 = 31/42

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