You could distribute this expression to get and even MORE simplified expression. Add the two terms in the parentheses together so that you get 4(7x). Now you can simply multiply 4 by 7x which would equal 28x. The new expression is 28x.
Try to simplify the equation: 4(6x+x). You should distribute first. 24x + 4x. That would equal 28x. If you simplified the equation, you should also get 4(7x). That also equals 28x. 28x is the answer so use 24x + 4x.
