Need some help please!

x=17

Step-by-step explanation:

The angle seen here is 180 degree so the equation we make to solve for the variable should equal to 180

First let's set up our equation:

7x+2x+27=180

Then we will combine like terms:

9x+27=180

Next we have to get rid of 27 so we only have 9x on one side. To do this let's subtract 27 on both sides of the equation:

9x=153

Now all we have to do is divide both sides by 9 to isolate the variable:

and you get x=17

step-by-step explanation:

it's is b