Answers

Add 18/81 and 10/70

18/81 + 10/70 is 23/63.

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,
   10/70 = 10 × 81/70 × 81 = 810/5670
4. Add the two like fractions:
   1260/5670 + 810/5670 = 1260 + 810/5670 = 2070/5670
5. 2070/5670 simplified gives 23/63
6. So, 18/81 + 10/70 = 23/63

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