Answers

Add 18/81 and 30/70

18/81 + 30/70 is 41/63.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 70 is 5670
   
   Next, find the equivalent fraction of both fractional numbers with denominator 5670
2. For the 1st fraction, since 81 × 70 = 5670,
   18/81 = 18 × 70/81 × 70 = 1260/5670
3. Likewise, for the 2nd fraction, since 70 × 81 = 5670,
   30/70 = 30 × 81/70 × 81 = 2430/5670
4. Add the two like fractions:
   1260/5670 + 2430/5670 = 1260 + 2430/5670 = 3690/5670
5. 3690/5670 simplified gives 41/63
6. So, 18/81 + 30/70 = 41/63

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