G-10+7g=15+3g i keep reworking it and i keep getting the wrong answer,

First you need to combine like terms the get all numbers and leters to one side then divide to get g alone so your left with G=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 .