geometry

in equation practice and with angle addition, this is sorta of hard to explain, so here is and example. so if the problem is 9x-91 and 6x+76 and the angles total is 180 you put it together like this 9x-91+6x+76=180. the thing is i can never figure out why they put 9x+91 first and in then in another problem they might have the 6x+76 go first and it effects your answer . he doesn't say anything about it in the videos.