SOLUTION: Brianna’s teacher asks her which of these three expressions are equivalent to each other.
Expression A: 9x - 3x - 4
Expression B: 12x - 4
Expression C: 5x + x -
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-> SOLUTION: Brianna’s teacher asks her which of these three expressions are equivalent to each other.
Expression A: 9x - 3x - 4
Expression B: 12x - 4
Expression C: 5x + x -
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Question 1192892: Brianna’s teacher asks her which of these three expressions are equivalent to each other.
Expression A: 9x - 3x - 4
Expression B: 12x - 4
Expression C: 5x + x - 4
Brianna says that all three expressions are equivalent because the value of each one is - 4 when x = 0.
Brianna’s thinking is incorrect.
Identify the error in Brianna’s thinking.
Determine which of the three expressions are equivalent.
Explain or show your process in determining which expressions are equivalent.
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