$x+4=8$

Step 1 ：The given equation is $x+4=8$

Step 2 ：Subtract 4 from both sides of the equation to isolate x

Step 3 ：This gives us $x=8-4$

Step 4 ：Simplify the right side of the equation to find the value of x

Step 5 ：Final Answer: The solution to the equation $x+4=8$ is $x=\boxed{4}$