Answers

Add 12/84 and 63/42

1^st number: 12/84, 2^nd number: 1 21/42

12/84 + 63/42 is 23/14.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 42 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 84 × 1 = 84,
   12/84 = 12 × 1/84 × 1 = 12/84
3. Likewise, for the 2nd fraction, since 42 × 2 = 84,
   63/42 = 63 × 2/42 × 2 = 126/84
4. Add the two like fractions:
   12/84 + 126/84 = 12 + 126/84 = 138/84
5. 138/84 simplified gives 23/14
6. So, 12/84 + 63/42 = 23/14
   In mixed form: 19/14

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