Answers

Add 15/84 and 25/70

15/84 + 25/70 is 15/28.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 70 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 70 × 6 = 420,
   25/70 = 25 × 6/70 × 6 = 150/420
4. Add the two like fractions:
   75/420 + 150/420 = 75 + 150/420 = 225/420
5. 225/420 simplified gives 15/28
6. So, 15/84 + 25/70 = 15/28

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