Answers

Add 40/81 and 90/70

1^st number: 40/81, 2^nd number: 1 20/70

40/81 + 90/70 is 1009/567.

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,
   40/81 = 40 × 70/81 × 70 = 2800/5670
3. Likewise, for the 2nd fraction, since 70 × 81 = 5670,
   90/70 = 90 × 81/70 × 81 = 7290/5670
4. Add the two like fractions:
   2800/5670 + 7290/5670 = 2800 + 7290/5670 = 10090/5670
5. 10090/5670 simplified gives 1009/567
6. So, 40/81 + 90/70 = 1009/567
   In mixed form: 1442/567

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