Answers

Add 42/84 and 21/84

42/84 + 21/84 is 3/4.

Steps for adding fractions

1. Add the two fractions:
   42/84 + 21/84 = 42 + 21/84 = 63/84
2. 63/84 simplified gives 3/4
3. So, 42/84 + 21/84 = 3/4

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