Answers

Add 12/84 and 84/45

1^st number: 12/84, 2^nd number: 1 39/45

12/84 + 84/45 is 211/105.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 45 is 1260
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1260
2. For the 1st fraction, since 84 × 15 = 1260,
   12/84 = 12 × 15/84 × 15 = 180/1260
3. Likewise, for the 2nd fraction, since 45 × 28 = 1260,
   84/45 = 84 × 28/45 × 28 = 2352/1260
4. Add the two like fractions:
   180/1260 + 2352/1260 = 180 + 2352/1260 = 2532/1260
5. 2532/1260 simplified gives 211/105
6. So, 12/84 + 84/45 = 211/105
   In mixed form: 21/105

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