Answers

Add 72/10 and 98/84

1^st number: 7 2/10, 2^nd number: 1 14/84

72/10 + 98/84 is 251/30.

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,
   72/10 = 72 × 42/10 × 42 = 3024/420
3. Likewise, for the 2nd fraction, since 84 × 5 = 420,
   98/84 = 98 × 5/84 × 5 = 490/420
4. Add the two like fractions:
   3024/420 + 490/420 = 3024 + 490/420 = 3514/420
5. 3514/420 simplified gives 251/30
6. So, 72/10 + 98/84 = 251/30
   In mixed form: 811/30

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