Question

Which value for x makes the sentence true?

3x - 1 = 14


A. x = 3

B. x = 15

C. x = 18

D. x = 5

Answer 1

Answer: D

3x- 1 = 14
3x = 14 + 1
3x = 15
x = 15/3
x = 5

So, x equals 5.

Verification: 3(5) - 1 = 14
15 - 1 = 14
14 = 14

Answer 2

The answer is:

D. x = 5

Work/explanation:

Begin by adding 1 on each side:

`\sf{3x-1=14}`

`\sf{3x=15}`

Now, divide each side by 3

`\sf{x=5}`

Hence, the answer is D.

Note: We use inverse operations to solve for the variable.