Answers

Add 56/15 and 42/84

1^st number: 3 11/15, 2^nd number: 42/84

56/15 + 42/84 is 127/30.

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,
   56/15 = 56 × 28/15 × 28 = 1568/420
3. Likewise, for the 2nd fraction, since 84 × 5 = 420,
   42/84 = 42 × 5/84 × 5 = 210/420
4. Add the two like fractions:
   1568/420 + 210/420 = 1568 + 210/420 = 1778/420
5. 1778/420 simplified gives 127/30
6. So, 56/15 + 42/84 = 127/30
   In mixed form: 47/30

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