Answers

Add 8/21 and 6/54

8/21 + 6/54 is 31/63.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 54 is 378
   
   Next, find the equivalent fraction of both fractional numbers with denominator 378
2. For the 1st fraction, since 21 × 18 = 378,
   8/21 = 8 × 18/21 × 18 = 144/378
3. Likewise, for the 2nd fraction, since 54 × 7 = 378,
   6/54 = 6 × 7/54 × 7 = 42/378
4. Add the two like fractions:
   144/378 + 42/378 = 144 + 42/378 = 186/378
5. 186/378 simplified gives 31/63
6. So, 8/21 + 6/54 = 31/63

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