Help plz:))) I’ll mark u brainliest
ASAP!!!

x = 5

Step-by-step explanation:

As we know that

The exterior angle of a triangle is the result of the sum of the measures of the two non-adjacent interior angles.

In other words,

An exterior angle is equal to the sum of the two angles not right next to it.

so from the diagram,

(11x+5) is the exterior angle30° and (-5+7x) are the two non-adjacent interior angles.

so

subtract 7 from both sides

Divide both sides by 4

Therefore, x = 5