Answers

Add 84/12 and 27/45

1^st number: 7 0/12, 2^nd number: 27/45

84/12 + 27/45 is 38/5.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 45 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 12 × 15 = 180,
   84/12 = 84 × 15/12 × 15 = 1260/180
3. Likewise, for the 2nd fraction, since 45 × 4 = 180,
   27/45 = 27 × 4/45 × 4 = 108/180
4. Add the two like fractions:
   1260/180 + 108/180 = 1260 + 108/180 = 1368/180
5. 1368/180 simplified gives 38/5
6. So, 84/12 + 27/45 = 38/5
   In mixed form: 73/5

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