Answers

Add 84/20 and 84/80

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

84/20 + 84/80 is 21/4.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 80 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 20 × 4 = 80,
   84/20 = 84 × 4/20 × 4 = 336/80
3. Likewise, for the 2nd fraction, since 80 × 1 = 80,
   84/80 = 84 × 1/80 × 1 = 84/80
4. Add the two like fractions:
   336/80 + 84/80 = 336 + 84/80 = 420/80
5. 420/80 simplified gives 21/4
6. So, 84/20 + 84/80 = 21/4
   In mixed form: 51/4

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