Answers

Add 81/63 and 1/70

1^st number: 1 18/63, 2^nd number: 1/70

81/63 + 1/70 is 13/10.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 70 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 63 × 10 = 630,
   81/63 = 81 × 10/63 × 10 = 810/630
3. Likewise, for the 2nd fraction, since 70 × 9 = 630,
   1/70 = 1 × 9/70 × 9 = 9/630
4. Add the two like fractions:
   810/630 + 9/630 = 810 + 9/630 = 819/630
5. 819/630 simplified gives 13/10
6. So, 81/63 + 1/70 = 13/10
   In mixed form: 13/10

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