Answers

Add 15/84 and 12/63

15/84 + 12/63 is 31/84.

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,
   15/84 = 15 × 3/84 × 3 = 45/252
3. Likewise, for the 2nd fraction, since 63 × 4 = 252,
   12/63 = 12 × 4/63 × 4 = 48/252
4. Add the two like fractions:
   45/252 + 48/252 = 45 + 48/252 = 93/252
5. 93/252 simplified gives 31/84
6. So, 15/84 + 12/63 = 31/84

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