Find the value of each variable 2x y+x y-5

I don’t think you can find the value. there isn’t enough info to go off of. but you can simplify the expression
just collect the terms
3xy-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 .