Answers

Add 84/18 and 80/27

1^st number: 4 12/18, 2^nd number: 2 26/27

84/18 + 80/27 is 206/27.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 27 is 54
   
   Next, find the equivalent fraction of both fractional numbers with denominator 54
2. For the 1st fraction, since 18 × 3 = 54,
   84/18 = 84 × 3/18 × 3 = 252/54
3. Likewise, for the 2nd fraction, since 27 × 2 = 54,
   80/27 = 80 × 2/27 × 2 = 160/54
4. Add the two like fractions:
   252/54 + 160/54 = 252 + 160/54 = 412/54
5. 412/54 simplified gives 206/27
6. So, 84/18 + 80/27 = 206/27
   In mixed form: 717/27

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