Answers

Add 64/84 and 28/12

1^st number: 64/84, 2^nd number: 2 4/12

64/84 + 28/12 is 65/21.

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,
   64/84 = 64 × 1/84 × 1 = 64/84
3. Likewise, for the 2nd fraction, since 12 × 7 = 84,
   28/12 = 28 × 7/12 × 7 = 196/84
4. Add the two like fractions:
   64/84 + 196/84 = 64 + 196/84 = 260/84
5. 260/84 simplified gives 65/21
6. So, 64/84 + 28/12 = 65/21
   In mixed form: 32/21

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