Answer:
8
First, distribute 4 into the parentheses.
You would get :
4x + 28 - 7x = 4
Next, combine like terms.
You would get:
-3x + 28 = 4
Now, subtract 28 from 4.
You would get:
-3x = -24
Lastly, to find x by itself, divide both sides by -3.
x = 8
Hope this helps! Good luck :)
