Answers

Add 21/42 and 84/25

1^st number: 21/42, 2^nd number: 3 9/25

21/42 + 84/25 is 193/50.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 25 is 1050
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1050
2. For the 1st fraction, since 42 × 25 = 1050,
   21/42 = 21 × 25/42 × 25 = 525/1050
3. Likewise, for the 2nd fraction, since 25 × 42 = 1050,
   84/25 = 84 × 42/25 × 42 = 3528/1050
4. Add the two like fractions:
   525/1050 + 3528/1050 = 525 + 3528/1050 = 4053/1050
5. 4053/1050 simplified gives 193/50
6. So, 21/42 + 84/25 = 193/50
   In mixed form: 343/50

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