Answers

Add 42/81 and 18/42

42/81 + 18/42 is 179/189.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 42 is 1134
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1134
2. For the 1st fraction, since 81 × 14 = 1134,
   42/81 = 42 × 14/81 × 14 = 588/1134
3. Likewise, for the 2nd fraction, since 42 × 27 = 1134,
   18/42 = 18 × 27/42 × 27 = 486/1134
4. Add the two like fractions:
   588/1134 + 486/1134 = 588 + 486/1134 = 1074/1134
5. 1074/1134 simplified gives 179/189
6. So, 42/81 + 18/42 = 179/189

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