Answers

Add 3/54 and 9/42

3/54 + 9/42 is 17/63.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 42 is 378
   
   Next, find the equivalent fraction of both fractional numbers with denominator 378
2. For the 1st fraction, since 54 × 7 = 378,
   3/54 = 3 × 7/54 × 7 = 21/378
3. Likewise, for the 2nd fraction, since 42 × 9 = 378,
   9/42 = 9 × 9/42 × 9 = 81/378
4. Add the two like fractions:
   21/378 + 81/378 = 21 + 81/378 = 102/378
5. 102/378 simplified gives 17/63
6. So, 3/54 + 9/42 = 17/63

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