Question

Answers in case you cant see them:

-3
-7
-11
11

Answer 1

11

Explanation:

consecutive interior angles always equal to 180 degrees, so you would add both equations together and equal it to 180 degrees. you would then simplify and solve.

8x-9 + 2+9x = 180

-7 + 17x = 180

-7+7 180+7 = 187

17x = 187

17x/17 = 187/17

x=11

Answer 2

Explanation:

8x-9+2+9x=180 degree(being co interior angles)

17x-7=180

17x=180+7

x=187/17

x=11 degree