50 POINTS PLEASE HELP ASAP THE FULL QUESTION IS ON THE PICTURE

Find the area of a parallelogram with base 15 yards and height 21 2/3

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.

Solve the equation. 2x - 8(x+1)= 6(2x - 3)