Answers

Add 10/42 and 15/84

10/42 + 15/84 is 5/12.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 84 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 42 × 2 = 84,
   10/42 = 10 × 2/42 × 2 = 20/84
3. Likewise, for the 2nd fraction, since 84 × 1 = 84,
   15/84 = 15 × 1/84 × 1 = 15/84
4. Add the two like fractions:
   20/84 + 15/84 = 20 + 15/84 = 35/84
5. 35/84 simplified gives 5/12
6. So, 10/42 + 15/84 = 5/12

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