Question 1204281

Let the number be   "x."

11 - 5x = 4x + 20

First, let's get all the terms involving x on one side of the equation. Add 5x to both sides:
11 - 5x + 5x = 4x + 5x + 20

we get

11 = 9x + 20
subtract 20 from both sides:
11 - 20 = 9x + 20 - 20

we get 

-9 = 9x

Finally, divide both sides by 9 to solve for x:
-9 / 9 = 9x / 9

x = -1

The number is -1.