Answers

Add 84/80 and 42/20

1^st number: 1 4/80, 2^nd number: 2 2/20

84/80 + 42/20 is 63/20.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 20 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 80 × 1 = 80,
   84/80 = 84 × 1/80 × 1 = 84/80
3. Likewise, for the 2nd fraction, since 20 × 4 = 80,
   42/20 = 42 × 4/20 × 4 = 168/80
4. Add the two like fractions:
   84/80 + 168/80 = 84 + 168/80 = 252/80
5. 252/80 simplified gives 63/20
6. So, 84/80 + 42/20 = 63/20
   In mixed form: 33/20

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