## Brianna’s teacher asks her which of these three expressions are equivalent to each other. Expression A: 9 x −<

Question

Brianna’s teacher asks her which of these three expressions are equivalent to each other.

Expression A:

9

x

−

3

x

−

4

Expression B:

12

x

−

4

Expression C:

5

x

+

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.

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Math
2 months
2021-10-15T01:36:24+00:00
2021-10-15T01:36:24+00:00 1 Answer
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## Answers ( )

Answer:Expression A and C are correct because 9x – 3x = 6x and 5x + x = 6x, then -4