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Anna is given the equation 5 + 3x = 3x + 5

The replacement set is {1, 2, 3, 4}
Anna says the solution is {2}, but the teacher marked her problem incorrect. Explain what the answer should be and why. Why do you think this is?

User Jon Gretar
by
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1 Answer

3 votes

Answer:

There are infinite possibilities for x

Explanation:

5 + 3x = 3x + 5

-5 -5

3x = 3x

÷3 ÷3

x = x

Therefore, you can put any replacement to x, and the equation would be true.

User OOPS Studio
by
8.0k points

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