### Home > GC > Chapter 12 > Lesson 12.1.5 > Problem 12-50

12-50.

For each relationship below, write and solve an equation for

*x*.**Justify**your method. Homework Help ✎

How are these angles related?

4*x* − 2° = 2*x* + 9°

11° = 2*x**x* = 55°

What is the sum of the angles of a parallelogram?

*x* = 41°

How are these angles related?