Question

which equation can you use to find the value of x?
x = 105 + 30
x + 30 + 105 = 180
x = 105 - 30
x + 30 + 105 = 360
(there is a triangle image with angles 30°, 105° and x°)

Explanation:

Step1: Recall Triangle Angle Sum

The sum of interior angles in a triangle is \(180^\circ\).

Step2: Identify Angles

The triangle has angles \(30^\circ\), \(105^\circ\), and \(x\).

Step3: Form Equation

Using the angle - sum property, \(x + 30+105 = 180\).

Answer:

\(x + 30 + 105 = 180\)