Answers

Add 28/15 and 70/84

1^st number: 1 13/15, 2^nd number: 70/84

28/15 + 70/84 is 27/10.

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,
   28/15 = 28 × 28/15 × 28 = 784/420
3. Likewise, for the 2nd fraction, since 84 × 5 = 420,
   70/84 = 70 × 5/84 × 5 = 350/420
4. Add the two like fractions:
   784/420 + 350/420 = 784 + 350/420 = 1134/420
5. 1134/420 simplified gives 27/10
6. So, 28/15 + 70/84 = 27/10
   In mixed form: 27/10

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