Since the angles are Corresponding Angles, we can set the unknown value equal to each other then solve for x.
20-8x = 30 - 16x <em>Original Equation</em> 20 = 30 - 8x <em /><em>Moving x terms to one side by addition</em> -10 = -8x <em>Subtraction Prop of Equality</em> x = 1.25 <em>Division Prop of Equality</em>
