Answers

Add 63/70 and 84/81

1^st number: 63/70, 2^nd number: 1 3/81

63/70 + 84/81 is 523/270.

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,
   63/70 = 63 × 81/70 × 81 = 5103/5670
3. Likewise, for the 2nd fraction, since 81 × 70 = 5670,
   84/81 = 84 × 70/81 × 70 = 5880/5670
4. Add the two like fractions:
   5103/5670 + 5880/5670 = 5103 + 5880/5670 = 10983/5670
5. 10983/5670 simplified gives 523/270
6. So, 63/70 + 84/81 = 523/270
   In mixed form: 1253/270

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