Answers

Add 81/2 and 90/84

1^st number: 40 1/2, 2^nd number: 1 6/84

81/2 + 90/84 is 291/7.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 2 and 84 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 2 × 42 = 84,
   81/2 = 81 × 42/2 × 42 = 3402/84
3. Likewise, for the 2nd fraction, since 84 × 1 = 84,
   90/84 = 90 × 1/84 × 1 = 90/84
4. Add the two like fractions:
   3402/84 + 90/84 = 3402 + 90/84 = 3492/84
5. 3492/84 simplified gives 291/7
6. So, 81/2 + 90/84 = 291/7
   In mixed form: 414/7

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