Answers

Add 81/18 and 30/70

1^st number: 4 9/18, 2^nd number: 30/70

81/18 + 30/70 is 69/14.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 70 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 18 × 35 = 630,
   81/18 = 81 × 35/18 × 35 = 2835/630
3. Likewise, for the 2nd fraction, since 70 × 9 = 630,
   30/70 = 30 × 9/70 × 9 = 270/630
4. Add the two like fractions:
   2835/630 + 270/630 = 2835 + 270/630 = 3105/630
5. 3105/630 simplified gives 69/14
6. So, 81/18 + 30/70 = 69/14
   In mixed form: 413/14

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