Question

look at the diagram. which equation can be used to solve for x? 8x = 66 12x = 66 9x + 3 = 66 5x = 66 solve for x.

Explanation:

Step1: Identify vertical - angle relationship

Vertical angles are equal. The angle \((5x + 3)^{\circ}\) and \(66^{\circ}\) are vertical angles.
So we can set up the equation \(5x+3 = 66\).

Answer:

The equation to solve for \(x\) is \(5x + 3=66\), and \(x=\frac{66 - 3}{5}=\frac{63}{5}=12.6\)