KatelynLamperouge
Answered

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. Yes or No

Identify the error in Brianna's thinking. Determine which of the three expressions are equivalent.

Verified Answer :

Yes, Brianna's thinking is incorrect because they don't all add up to the same answer.  They are totally different equations.  even though they all say -4 and x=0 they are different.

Also, I have a question for biology im in middle school do you think you could check it out and try and answer it.
thanks!

lachae
Aand c. are equivalent because the value of each is -4 and x=6

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