Answers

Add 20/84 and 6/63

20/84 + 6/63 is 1/3.

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,
   20/84 = 20 × 3/84 × 3 = 60/252
3. Likewise, for the 2nd fraction, since 63 × 4 = 252,
   6/63 = 6 × 4/63 × 4 = 24/252
4. Add the two like fractions:
   60/252 + 24/252 = 60 + 24/252 = 84/252
5. 84/252 simplified gives 1/3
6. So, 20/84 + 6/63 = 1/3

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