Answers

Add 6/20 and 81/80

1^st number: 6/20, 2^nd number: 1 1/80

6/20 + 81/80 is 21/16.

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,
   6/20 = 6 × 4/20 × 4 = 24/80
3. Likewise, for the 2nd fraction, since 80 × 1 = 80,
   81/80 = 81 × 1/80 × 1 = 81/80
4. Add the two like fractions:
   24/80 + 81/80 = 24 + 81/80 = 105/80
5. 105/80 simplified gives 21/16
6. So, 6/20 + 81/80 = 21/16
   In mixed form: 15/16

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