Answers

Add 1/42 and 18/84

1/42 + 18/84 is 5/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 84 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 42 × 2 = 84,
   1/42 = 1 × 2/42 × 2 = 2/84
3. Likewise, for the 2nd fraction, since 84 × 1 = 84,
   18/84 = 18 × 1/84 × 1 = 18/84
4. Add the two like fractions:
   2/84 + 18/84 = 2 + 18/84 = 20/84
5. 20/84 simplified gives 5/21
6. So, 1/42 + 18/84 = 5/21

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