Answers

Add 27/84 and 18/63

27/84 + 18/63 is 17/28.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 63 is 252
   
   Next, find the equivalent fraction of both fractional numbers with denominator 252
2. For the 1st fraction, since 84 × 3 = 252,
   27/84 = 27 × 3/84 × 3 = 81/252
3. Likewise, for the 2nd fraction, since 63 × 4 = 252,
   18/63 = 18 × 4/63 × 4 = 72/252
4. Add the two like fractions:
   81/252 + 72/252 = 81 + 72/252 = 153/252
5. 153/252 simplified gives 17/28
6. So, 27/84 + 18/63 = 17/28

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