Answers

Add 90/10 and 28/84

1^st number: 9 0/10, 2^nd number: 28/84

90/10 + 28/84 is 28/3.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 10 and 84 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 10 × 42 = 420,
   90/10 = 90 × 42/10 × 42 = 3780/420
3. Likewise, for the 2nd fraction, since 84 × 5 = 420,
   28/84 = 28 × 5/84 × 5 = 140/420
4. Add the two like fractions:
   3780/420 + 140/420 = 3780 + 140/420 = 3920/420
5. 3920/420 simplified gives 28/3
6. So, 90/10 + 28/84 = 28/3
   In mixed form: 91/3

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