Answer:
x=57
Step-by-step explanation:
Here's How. First, corrosponing angles on 2 intersecting straight lines and equal, for the line opposite of angle x is also x. same with 2x+9, so you know all angles added togather is 2x+9+2x+9+x+x which is 6x+18. The total angle is 360 as it creates a circle so that means 6x+18=360, so 6x=342, so divide both sides by 6 and you get x=57
