Note the equal sign. What you do to one side, you do to the other. Isolate the x.
Subtract 4 from both sides
x + 4 (-4) = 11 (-4)
x = 11 - 4
x = 7
7 is your answer for x.
hope this helps
Well, if x+4=11, and 7+4=11, then that means that x=7
