Answers

Add 15/84 and 21/27

15/84 + 21/27 is 241/252.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 27 is 756
   
   Next, find the equivalent fraction of both fractional numbers with denominator 756
2. For the 1st fraction, since 84 × 9 = 756,
   15/84 = 15 × 9/84 × 9 = 135/756
3. Likewise, for the 2nd fraction, since 27 × 28 = 756,
   21/27 = 21 × 28/27 × 28 = 588/756
4. Add the two like fractions:
   135/756 + 588/756 = 135 + 588/756 = 723/756
5. 723/756 simplified gives 241/252
6. So, 15/84 + 21/27 = 241/252

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