For each diagram, state two pairs of angles that are congruent

Two congruent angle for diagram 8 would be angle LNV and angle PNM. Two congruent angles for diagram 9 would be angle BCE and angle FCD.

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.