Answers

Add 18/15 and 1/84

1^st number: 1 3/15, 2^nd number: 1/84

18/15 + 1/84 is 509/420.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 84 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 15 × 28 = 420,
   18/15 = 18 × 28/15 × 28 = 504/420
3. Likewise, for the 2nd fraction, since 84 × 5 = 420,
   1/84 = 1 × 5/84 × 5 = 5/420
4. Add the two like fractions:
   504/420 + 5/420 = 504 + 5/420 = 509/420
5. So, 18/15 + 1/84 = 509/420
   In mixed form: 189/420

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