Answers

Add 18/42 and 54/84

18/42 + 54/84 is 15/14.

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,
   18/42 = 18 × 2/42 × 2 = 36/84
3. Likewise, for the 2nd fraction, since 84 × 1 = 84,
   54/84 = 54 × 1/84 × 1 = 54/84
4. Add the two like fractions:
   36/84 + 54/84 = 36 + 54/84 = 90/84
5. 90/84 simplified gives 15/14
6. So, 18/42 + 54/84 = 15/14
   In mixed form: 11/14

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