Answers

Add 7/70 and 40/81

7/70 + 40/81 is 481/810.

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,
   7/70 = 7 × 81/70 × 81 = 567/5670
3. Likewise, for the 2nd fraction, since 81 × 70 = 5670,
   40/81 = 40 × 70/81 × 70 = 2800/5670
4. Add the two like fractions:
   567/5670 + 2800/5670 = 567 + 2800/5670 = 3367/5670
5. 3367/5670 simplified gives 481/810
6. So, 7/70 + 40/81 = 481/810

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