Answer:
it is 11x+25x=180
Explanation:
the sum of the angles of a triangle is 180
so, 11x+25x+9x=180
.11x+34x=180 true
34x=25x+9x
.36x+9x=180 true
36x=11x+25x
.11x+25x+9x=180 true
.11x+25x=180 false because the angle at F hasn't been added to the equation.