Question

look at the diagram.
which equation can be used to solve for x?
3(5x)=60 3(5 + x)=60
3(5x)+60=90 3(5 + x)+60=180

Explanation:

Step1: Identify the relationship between angles

Angles on a straight - line sum to \(180^{\circ}\). The two angles \(60^{\circ}\) and \(3(5 + x)^{\circ}\) form a linear pair.

Step2: Set up the equation

Using the linear - pair angle sum property: \(60+3(5 + x)=180\)

Answer:

\(3(5 + x)+60 = 180\)