Answers

Add 12/84 and 60/63

12/84 + 60/63 is 23/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 63 is 252
   
   Next, find the equivalent fraction of both fractional numbers with denominator 252
2. For the 1st fraction, since 84 × 3 = 252,
   12/84 = 12 × 3/84 × 3 = 36/252
3. Likewise, for the 2nd fraction, since 63 × 4 = 252,
   60/63 = 60 × 4/63 × 4 = 240/252
4. Add the two like fractions:
   36/252 + 240/252 = 36 + 240/252 = 276/252
5. 276/252 simplified gives 23/21
6. So, 12/84 + 60/63 = 23/21
   In mixed form: 12/21

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