Answers

Add 21/84 and 98/40

1^st number: 21/84, 2^nd number: 2 18/40

21/84 + 98/40 is 27/10.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 40 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 84 × 10 = 840,
   21/84 = 21 × 10/84 × 10 = 210/840
3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
   98/40 = 98 × 21/40 × 21 = 2058/840
4. Add the two like fractions:
   210/840 + 2058/840 = 210 + 2058/840 = 2268/840
5. 2268/840 simplified gives 27/10
6. So, 21/84 + 98/40 = 27/10
   In mixed form: 27/10

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