Answer:
x=17
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