Answers

Add 9/84 and 45/12

1^st number: 9/84, 2^nd number: 3 9/12

9/84 + 45/12 is 27/7.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 12 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 84 × 1 = 84,
   9/84 = 9 × 1/84 × 1 = 9/84
3. Likewise, for the 2nd fraction, since 12 × 7 = 84,
   45/12 = 45 × 7/12 × 7 = 315/84
4. Add the two like fractions:
   9/84 + 315/84 = 9 + 315/84 = 324/84
5. 324/84 simplified gives 27/7
6. So, 9/84 + 45/12 = 27/7
   In mixed form: 36/7

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