Answer:

Explanation:
For this exercise it is necessary to remember the multiplication of signs:

Then, having the following equation provided in the exercise:

You need to solve for the variable "x" in order to find its value.
To solve the equation, you can follow the steps shown below:
Step 1: You need to subtract 4 from both sides of the equation. Then:

Step 2: This is the final step. You must multiply both sides of the equation by 5 in order to find the value of the variable "x".
Then, you get the following result:
