Answers

Add 18/2 and 21/84

1^st number: 9 0/2, 2^nd number: 21/84

18/2 + 21/84 is 37/4.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 2 and 84 is 84
2. For the 1st fraction, since 2 × 42 = 84,
   18/2 = 18 × 42/2 × 42 = 756/84
3. Likewise, for the 2nd fraction, since 84 × 1 = 84,
   21/84 = 21 × 1/84 × 1 = 21/84
4. Add the two fractions:
   756/84 + 21/84 = 756 + 21/84 = 777/84
5. 777/84 simplified gives 37/4
6. So, 18/2 + 21/84 = 37/4
   In mixed form: 91/4

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