Answers

Add 18/8 and 45/84

1^st number: 2 2/8, 2^nd number: 45/84

18/8 + 45/84 is 39/14.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 8 and 84 is 168
   
   Next, find the equivalent fraction of both fractional numbers with denominator 168
2. For the 1st fraction, since 8 × 21 = 168,
   18/8 = 18 × 21/8 × 21 = 378/168
3. Likewise, for the 2nd fraction, since 84 × 2 = 168,
   45/84 = 45 × 2/84 × 2 = 90/168
4. Add the two like fractions:
   378/168 + 90/168 = 378 + 90/168 = 468/168
5. 468/168 simplified gives 39/14
6. So, 18/8 + 45/84 = 39/14
   In mixed form: 211/14

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