Answers

Add 3/84 and 45/15

1^st number: 3/84, 2^nd number: 3 0/15

3/84 + 45/15 is 85/28.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 15 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 84 × 5 = 420,
   3/84 = 3 × 5/84 × 5 = 15/420
3. Likewise, for the 2nd fraction, since 15 × 28 = 420,
   45/15 = 45 × 28/15 × 28 = 1260/420
4. Add the two like fractions:
   15/420 + 1260/420 = 15 + 1260/420 = 1275/420
5. 1275/420 simplified gives 85/28
6. So, 3/84 + 45/15 = 85/28
   In mixed form: 31/28

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