Question

What will be the result of substituting 2 for x in both expressions below? 

1/2x + 4

x + -1/2x - 2

Both expressions equal 5 when substituting 2 for x because the expressions are equivalent.

Both expressions equal 6 when substituting 2 for x because the expressions are equivalent.

One expression equals 5 when substituting 2 for x, and the other equals 2 because the expressions are not equivalent.

One expression equals 6 when substituting 2 for x, and the other equals 2 because the expressions are not equivalent.

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Answer 1

The answer is the third one

Explanation:

e2020

Answer 2

Step By Step:

With each expression we will first simplify (combine like terms), then substitute, and then solve.

First Expression:

1/2x + 4

Simplify:

There is no like terms so we result in 1/2x + 4 still

Substitute:

1/2x + 4

1/2(2) + 4

Solve:

1/2(2) + 4

1 + 4 = 5

Second Expression:

x + -1/2x - 2

Simplify:

x + -1/2x - 2

1/2x + (-2)

Substitute:

1/2x + (-2)

1/2(2) + (-2)

Solve:

1/2(2) + (-2)

1 + (-2)

1 - 2 = -1

Answer:

None of the answers are correct from what I can see. Although, we do know that the two expressions are not equivalent considering we got two completely different answers, so your answer could not be A or B. Next, we know that one expression equals 5, which can remove D and leave us with only C. This leaves us with only to guess of what the answer is.