Answers

Add 18/84 and 54/25

1^st number: 18/84, 2^nd number: 2 4/25

18/84 + 54/25 is 831/350.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 25 is 2100
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2100
2. For the 1st fraction, since 84 × 25 = 2100,
   18/84 = 18 × 25/84 × 25 = 450/2100
3. Likewise, for the 2nd fraction, since 25 × 84 = 2100,
   54/25 = 54 × 84/25 × 84 = 4536/2100
4. Add the two like fractions:
   450/2100 + 4536/2100 = 450 + 4536/2100 = 4986/2100
5. 4986/2100 simplified gives 831/350
6. So, 18/84 + 54/25 = 831/350
   In mixed form: 2131/350

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