Question

Twice a number decreased by 2 is 14

Answer 1

To solve this problem, first we need to define that the number is "x".

Then, we define what twice that number is, which would be

`2x`

We decrease that 2x by 2:

`2x-2`

And this would be equal to 14:

`2x-2=14`

That would be the equation that represents the problem.

To solve that equation...

We add +2 to both sides of the equation:

`\begin{gathered} 2x-2+2=14+2 \\ 2x=16 \end{gathered}`

and we divide both sides by 2:

`\begin{gathered} (2x)/(2)=(16)/(2) \\ x=8 \end{gathered}`

Answer:

the equation is: 2x - 2 = 14

and the value of x is: x =8