What is the difference between 4.507 and 4.517

For what value of x does 4x = (1/8) x + 5?

In the figure below, ∠dec ≅ ∠dce, ∠b ≅ ∠f, and segment df is congruent to segment bd. point c is the point of intersection between segment ag and segment bd, while point e is the point of intersection between segment ag and segment df. the figure shows a polygon comprised of three triangles, abc, dec, and gfe. prove δabc ≅ δgfe.

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2