Answers

Add 8/21 and 84/45

1^st number: 8/21, 2^nd number: 1 39/45

8/21 + 84/45 is 236/105.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 45 is 315
   
   Next, find the equivalent fraction of both fractional numbers with denominator 315
2. For the 1st fraction, since 21 × 15 = 315,
   8/21 = 8 × 15/21 × 15 = 120/315
3. Likewise, for the 2nd fraction, since 45 × 7 = 315,
   84/45 = 84 × 7/45 × 7 = 588/315
4. Add the two like fractions:
   120/315 + 588/315 = 120 + 588/315 = 708/315
5. 708/315 simplified gives 236/105
6. So, 8/21 + 84/45 = 236/105
   In mixed form: 226/105

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