Answers

Add 84/2 and 45/40

1^st number: 42 0/2, 2^nd number: 1 5/40

84/2 + 45/40 is 345/8.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 2 and 40 is 40
   
   Next, find the equivalent fraction of both fractional numbers with denominator 40
2. For the 1st fraction, since 2 × 20 = 40,
   84/2 = 84 × 20/2 × 20 = 1680/40
3. Likewise, for the 2nd fraction, since 40 × 1 = 40,
   45/40 = 45 × 1/40 × 1 = 45/40
4. Add the two like fractions:
   1680/40 + 45/40 = 1680 + 45/40 = 1725/40
5. 1725/40 simplified gives 345/8
6. So, 84/2 + 45/40 = 345/8
   In mixed form: 431/8

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