Answers

Add 72/84 and 98/30

1^st number: 72/84, 2^nd number: 3 8/30

72/84 + 98/30 is 433/105.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 30 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 84 × 5 = 420,
   72/84 = 72 × 5/84 × 5 = 360/420
3. Likewise, for the 2nd fraction, since 30 × 14 = 420,
   98/30 = 98 × 14/30 × 14 = 1372/420
4. Add the two like fractions:
   360/420 + 1372/420 = 360 + 1372/420 = 1732/420
5. 1732/420 simplified gives 433/105
6. So, 72/84 + 98/30 = 433/105
   In mixed form: 413/105

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