Answers

Add 40/12 and 42/84

1^st number: 3 4/12, 2^nd number: 42/84

40/12 + 42/84 is 23/6.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 84 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 12 × 7 = 84,
   40/12 = 40 × 7/12 × 7 = 280/84
3. Likewise, for the 2nd fraction, since 84 × 1 = 84,
   42/84 = 42 × 1/84 × 1 = 42/84
4. Add the two like fractions:
   280/84 + 42/84 = 280 + 42/84 = 322/84
5. 322/84 simplified gives 23/6
6. So, 40/12 + 42/84 = 23/6
   In mixed form: 35/6

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