Answers

Add 20/12 and 42/84

1^st number: 1 8/12, 2^nd number: 42/84

20/12 + 42/84 is 13/6.

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,
   20/12 = 20 × 7/12 × 7 = 140/84
3. Likewise, for the 2nd fraction, since 84 × 1 = 84,
   42/84 = 42 × 1/84 × 1 = 42/84
4. Add the two like fractions:
   140/84 + 42/84 = 140 + 42/84 = 182/84
5. 182/84 simplified gives 13/6
6. So, 20/12 + 42/84 = 13/6
   In mixed form: 21/6

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