Answers

Add 84/28 and 90/14

1^st number: 3 0/28, 2^nd number: 6 6/14

84/28 + 90/14 is 66/7.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 14 is 28
   
   Next, find the equivalent fraction of both fractional numbers with denominator 28
2. For the 1st fraction, since 28 × 1 = 28,
   84/28 = 84 × 1/28 × 1 = 84/28
3. Likewise, for the 2nd fraction, since 14 × 2 = 28,
   90/14 = 90 × 2/14 × 2 = 180/28
4. Add the two like fractions:
   84/28 + 180/28 = 84 + 180/28 = 264/28
5. 264/28 simplified gives 66/7
6. So, 84/28 + 90/14 = 66/7
   In mixed form: 93/7

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