Answers

Add 15/84 and 25/60

15/84 + 25/60 is 25/42.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 60 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 84 × 5 = 420,
   15/84 = 15 × 5/84 × 5 = 75/420
3. Likewise, for the 2nd fraction, since 60 × 7 = 420,
   25/60 = 25 × 7/60 × 7 = 175/420
4. Add the two like fractions:
   75/420 + 175/420 = 75 + 175/420 = 250/420
5. 250/420 simplified gives 25/42
6. So, 15/84 + 25/60 = 25/42

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