Which expression is equivalent to x + x + x + 5 + 5 no mater what value substituted in for x

What is 1/2 x (6 x 4)+3 + 2 show your work

Just tell me how to set up the equation.

Me, prove a quadrilateral with vertices g(1,-1), h(5,1), i(4,3) and j(0,1) is a rectangle using the parallelogram method and a rectangle method.