Chapter 7.4, Problem 38E

To determine

To solve:the equation $-9x=-36$

Answer to Problem 38E

The solution of equation $-9x=-36$ is $x=4$ .

Explanation of Solution

Given information:

Consider, the equation is,

  $-9x=-36$

Calculation:

Therefore,

The value of equation is:

  $\begin{array}{l}-9x=-36\\ x=4\left[\text{divide both side with }-9\right]\end{array}$

To check the solution substitute the value $x=4$ in the in the $-9x$ if the result after substituting is $-36$ then the solution is correct.

  $\begin{array}{l}-9x\\ -9\cdot 4\left[\text{substitute }x\right]\\ -36\end{array}$

Hence, the solution is $x=4$ and correct