Answers

Add 84/28 and 63/30

1^st number: 3 0/28, 2^nd number: 2 3/30

84/28 + 63/30 is 51/10.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 30 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 28 × 15 = 420,
   84/28 = 84 × 15/28 × 15 = 1260/420
3. Likewise, for the 2nd fraction, since 30 × 14 = 420,
   63/30 = 63 × 14/30 × 14 = 882/420
4. Add the two like fractions:
   1260/420 + 882/420 = 1260 + 882/420 = 2142/420
5. 2142/420 simplified gives 51/10
6. So, 84/28 + 63/30 = 51/10
   In mixed form: 51/10

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