Answers

Add 16/27 and 81/70

1^st number: 16/27, 2^nd number: 1 11/70

16/27 + 81/70 is 3307/1890.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 27 and 70 is 1890
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1890
2. For the 1st fraction, since 27 × 70 = 1890,
   16/27 = 16 × 70/27 × 70 = 1120/1890
3. Likewise, for the 2nd fraction, since 70 × 27 = 1890,
   81/70 = 81 × 27/70 × 27 = 2187/1890
4. Add the two like fractions:
   1120/1890 + 2187/1890 = 1120 + 2187/1890 = 3307/1890
5. So, 16/27 + 81/70 = 3307/1890
   In mixed form: 11417/1890

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