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Which expression is equivalent to 3(7r+3)3(7r + 3)?\newlineChoices:\newline(A) 7r+97r + 9\newline(B) 21r+921r + 9\newline(C) 9r+219r + 21\newline(D) 21r+321r + 3

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Identify equivalent linear expressions Iright chevron icon

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Q. Which expression is equivalent to 3(7r+3)3(7r + 3)?\newlineChoices:\newline(A) 7r+97r + 9\newline(B) 21r+921r + 9\newline(C) 9r+219r + 21\newline(D) 21r+321r + 3
  1. Distribute 33 to terms: Distribute 33 to each term inside the parentheses.\newlineCalculation: 3(7r+3)=3×7r+3×33(7r + 3) = 3\times7r + 3\times3\newline=21r+9= 21r + 9
  2. Match with choices: Match the result with the given choices.\newlineCalculation: The expression 21r+921r + 9 matches choice (B)(B).

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