Answers

Add 42/84 and 15/35

42/84 + 15/35 is 13/14.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 35 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 84 × 5 = 420,
   42/84 = 42 × 5/84 × 5 = 210/420
3. Likewise, for the 2nd fraction, since 35 × 12 = 420,
   15/35 = 15 × 12/35 × 12 = 180/420
4. Add the two like fractions:
   210/420 + 180/420 = 210 + 180/420 = 390/420
5. 390/420 simplified gives 13/14
6. So, 42/84 + 15/35 = 13/14

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