Point D is on the interior of angle ABC. Use the given information to find m angle DBC. (Draw the picture.)

Question

M angle ABC = (5x +6)
M angle ABD = (7x - 9)
M angle DBC = (5x - 6)

Answer so far:
(5x + 6) + (5x - 6) = (7x - 9)
10x = 7x - 9
10 x - 7x = -9
3x = -9
X = -3

Do not understand how to draw the picture.

Answer 1

well, just draw angle ABC.

Then pick a point D somewhere between B and C, and draw the ray BD.

Then you have

(7x-9)+(5x-6) = (5x+6)

ABC is the big angle. ABD + DBC = ABC