Answers

Add 7/84 and 15/63

7/84 + 15/63 is 9/28.

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,
   7/84 = 7 × 3/84 × 3 = 21/252
3. Likewise, for the 2nd fraction, since 63 × 4 = 252,
   15/63 = 15 × 4/63 × 4 = 60/252
4. Add the two like fractions:
   21/252 + 60/252 = 21 + 60/252 = 81/252
5. 81/252 simplified gives 9/28
6. So, 7/84 + 15/63 = 9/28

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