Question

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Which statement has x = 2 as its solution?
3x - 12 = 17
7(x + 1) = 14
1- 6x = -11
4x + 5 = 3

Answer 1

Answer: 1 - 6x = -11

Explanation:

For each expression, substitute x for 2 to determine which is the correct expression:

3x - 12 = 17
3(2) - 12 = 17
6 - 12 = 17
-6
`\\eq` 17
Because the number on the left side of the equation doesn't equal the number on the right, this first equation is incorrect.

7(x + 1) = 14
7(2 + 1) = 14
7(3) = 14
21
`\\eq`14
This second equation is incorrect as well.

1 - 6x = -11
1 - 6(2) = -11
1 - 12 = -11
-11 = -11
Because the number on the left equals the number on the right, the third equation is correct.

I hope this helps! :)