Question

find the value of x.

Explanation:

Step1: Set up the equation

According to the angle - addition property, \(4x + 12x=112\).

Step2: Combine like terms

\(16x = 112\).

Step3: Solve for \(x\)

Divide both sides by \(16\): \(x=\frac{112}{16}\).

Answer:

\(7\)