Answers

Add 80/4 and 63/42

1^st number: 20 0/4, 2^nd number: 1 21/42

80/4 + 63/42 is 43/2.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 4 and 42 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 4 × 21 = 84,
   80/4 = 80 × 21/4 × 21 = 1680/84
3. Likewise, for the 2nd fraction, since 42 × 2 = 84,
   63/42 = 63 × 2/42 × 2 = 126/84
4. Add the two like fractions:
   1680/84 + 126/84 = 1680 + 126/84 = 1806/84
5. 1806/84 simplified gives 43/2
6. So, 80/4 + 63/42 = 43/2
   In mixed form: 211/2

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