Answers

Add 21/63 and 4/54

21/63 + 4/54 is 11/27.

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,
   21/63 = 21 × 6/63 × 6 = 126/378
3. Likewise, for the 2nd fraction, since 54 × 7 = 378,
   4/54 = 4 × 7/54 × 7 = 28/378
4. Add the two like fractions:
   126/378 + 28/378 = 126 + 28/378 = 154/378
5. 154/378 simplified gives 11/27
6. So, 21/63 + 4/54 = 11/27

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