Which equation is true for x=5?

T- you subtract 5 from both sides and get 3x=15 then you divide 15 by 3 equaling 5

“exterior angles of triangles. an exterior (or external) angle is the angle between one side of a triangle and the extension of an adjacent side. try this drag the orange dots on any vertex to reshape the triangle.” look to get to the answer i explained what it means and other things i hope it you .