Answers

Add 98/40 and 9/84

1^st number: 2 18/40, 2^nd number: 9/84

98/40 + 9/84 is 179/70.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 84 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 40 × 21 = 840,
   98/40 = 98 × 21/40 × 21 = 2058/840
3. Likewise, for the 2nd fraction, since 84 × 10 = 840,
   9/84 = 9 × 10/84 × 10 = 90/840
4. Add the two like fractions:
   2058/840 + 90/840 = 2058 + 90/840 = 2148/840
5. 2148/840 simplified gives 179/70
6. So, 98/40 + 9/84 = 179/70
   In mixed form: 239/70

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