Question

what is the value of x? 20 35 60 70

Explanation:

Step1: Use vertical angles property

Vertical angles are equal. So \(x + 40=3x\).

Step2: Solve the equation

Subtract \(x\) from both sides: \(40 = 3x-x\).
Simplify: \(40 = 2x\).
Divide both sides by 2: \(x=\frac{40}{2}=20\).

Answer:

A. 20