Answers

Add 42/84 and 25/42

42/84 + 25/42 is 23/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 42 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 84 × 1 = 84,
   42/84 = 42 × 1/84 × 1 = 42/84
3. Likewise, for the 2nd fraction, since 42 × 2 = 84,
   25/42 = 25 × 2/42 × 2 = 50/84
4. Add the two like fractions:
   42/84 + 50/84 = 42 + 50/84 = 92/84
5. 92/84 simplified gives 23/21
6. So, 42/84 + 25/42 = 23/21
   In mixed form: 12/21

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