I would appreciate if you could help and explain on how you do it. :)
<ABC and <DEF are complementary angles.
What is the measure of x?
![I would appreciate if you could help and explain on how you do it ltABC and ltDEF are complementary anglesWhat is the measure of x class=](https://us-static.z-dn.net/files/d38/e543f5239f24b8ea60678520ebbb35ec.jpg)