Answer: 1
Step-by-step explanation: To find the value of x, we can solve the equation by isolating the variable on one side.
By rearranging the equation, we have:
x + 4x = 9 - 4
Combining like terms, we get:
5x = 5
Dividing both sides by 5, we find:
x = 1
Therefore, the value of x is 1.