Answers

Add 18/84 and 80/21

1^st number: 18/84, 2^nd number: 3 17/21

18/84 + 80/21 is 169/42.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 21 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 84 × 1 = 84,
   18/84 = 18 × 1/84 × 1 = 18/84
3. Likewise, for the 2nd fraction, since 21 × 4 = 84,
   80/21 = 80 × 4/21 × 4 = 320/84
4. Add the two like fractions:
   18/84 + 320/84 = 18 + 320/84 = 338/84
5. 338/84 simplified gives 169/42
6. So, 18/84 + 80/21 = 169/42
   In mixed form: 41/42

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