Answers

Add 30/84 and 15/9

1^st number: 30/84, 2^nd number: 1 6/9

30/84 + 15/9 is 85/42.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 9 is 252
   
   Next, find the equivalent fraction of both fractional numbers with denominator 252
2. For the 1st fraction, since 84 × 3 = 252,
   30/84 = 30 × 3/84 × 3 = 90/252
3. Likewise, for the 2nd fraction, since 9 × 28 = 252,
   15/9 = 15 × 28/9 × 28 = 420/252
4. Add the two like fractions:
   90/252 + 420/252 = 90 + 420/252 = 510/252
5. 510/252 simplified gives 85/42
6. So, 30/84 + 15/9 = 85/42
   In mixed form: 21/42

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