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Dedra said that 3x + 5 and 18 + x are equivalent expressions because you can replace the x in both equations with a 4. Tomas said they are not equivalent because when you replace x with 5 in each expression,
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Dedra said that 3x + 5 and 18 + x are equivalent expressions because you can replace the x in both equations with a 4. Tomas said they are not equivalent because when you replace x with 5 in each expression, they don’t have the same value. Who is correct?

A. Dedra is correct
B. Tommy is correct
C. Neither person is correct
D. Both people are correct

Dedra said that 3x + 5 and 18 + x are equivalent expressions because you can replace-example-1
User Bobble Bubble
by
8.2k points

2 Answers

3 votes
If x = 4, then

3x + 5 = 3*4+5 = 17
and,
18 + x = 18 + 4 = 22

Dedra is not correct then.

If x = 5

3x + 5 = 20
and,
18 + x = 23

Therefore, Tommy is correct.
User Dthomasen
by
8.6k points
7 votes

Answer:

B

Explanation:

User Elacuesta
by
7.4k points
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