Answers

Add 42/63 and 4/54

42/63 + 4/54 is 20/27.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 54 is 378
   
   Next, find the equivalent fraction of both fractional numbers with denominator 378
2. For the 1st fraction, since 63 × 6 = 378,
   42/63 = 42 × 6/63 × 6 = 252/378
3. Likewise, for the 2nd fraction, since 54 × 7 = 378,
   4/54 = 4 × 7/54 × 7 = 28/378
4. Add the two like fractions:
   252/378 + 28/378 = 252 + 28/378 = 280/378
5. 280/378 simplified gives 20/27
6. So, 42/63 + 4/54 = 20/27

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