Answers

Add 84/18 and 15/84

1^st number: 4 12/18, 2^nd number: 15/84

84/18 + 15/84 is 407/84.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 84 is 252
   
   Next, find the equivalent fraction of both fractional numbers with denominator 252
2. For the 1st fraction, since 18 × 14 = 252,
   84/18 = 84 × 14/18 × 14 = 1176/252
3. Likewise, for the 2nd fraction, since 84 × 3 = 252,
   15/84 = 15 × 3/84 × 3 = 45/252
4. Add the two like fractions:
   1176/252 + 45/252 = 1176 + 45/252 = 1221/252
5. 1221/252 simplified gives 407/84
6. So, 84/18 + 15/84 = 407/84
   In mixed form: 471/84

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