To solve the equation x + 4x + 4 = 9, we first combine like terms on the left side. The terms x and 4x can be added together:
x + 4x becomes 5x. So the equation now looks like this:
5x + 4 = 9
Next, we want to isolate x. To do this, we first subtract 4 from both sides of the equation:
5x + 4 – 4 = 9 – 4
This simplifies to:
5x = 5
Now, we divide both sides by 5 to solve for x:
x = 5 / 5
Which simplifies to:
x = 1
So, the solution to the equation x + 4x + 4 = 9 is x = 1.