Question

Consider the equation.

4(pr + 1) = 64
The value of x in terms of p is
The value of x when p is -5 is

Answer 1

`\begin{gathered} x=(15)/(p) \\ x=-3 \end{gathered}`

Explanation:

To solve the equation use inverse operations. Addition and subtraction are inverse operations, multiplication, and division too.

Therefore, solve for x in the expression below:

`\begin{gathered} 4(px+1)=64 \\ px+1=(64)/(4) \\ px+1=16 \\ px=16-1 \\ px=15 \\ x=(15)/(p) \end{gathered}`

Now, substitute p=-5 into the equation we got above:

`\begin{gathered} x=(15)/(-5) \\ x=-3 \end{gathered}`