Answers

Add 81/18 and 45/70

1^st number: 4 9/18, 2^nd number: 45/70

81/18 + 45/70 is 36/7.

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,
   45/70 = 45 × 9/70 × 9 = 405/630
4. Add the two like fractions:
   2835/630 + 405/630 = 2835 + 405/630 = 3240/630
5. 3240/630 simplified gives 36/7
6. So, 81/18 + 45/70 = 36/7
   In mixed form: 51/7

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