Answers

Add 9/42 and 7/54

9/42 + 7/54 is 65/189.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 54 is 378
   
   Next, find the equivalent fraction of both fractional numbers with denominator 378
2. For the 1st fraction, since 42 × 9 = 378,
   9/42 = 9 × 9/42 × 9 = 81/378
3. Likewise, for the 2nd fraction, since 54 × 7 = 378,
   7/54 = 7 × 7/54 × 7 = 49/378
4. Add the two like fractions:
   81/378 + 49/378 = 81 + 49/378 = 130/378
5. 130/378 simplified gives 65/189
6. So, 9/42 + 7/54 = 65/189

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