3more than a number divided by 12 equals to 40, turn this phase into a algebraic equation.

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)

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 this problem! extra ! 3025/5.5 = a/90.75