Question

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Explanation:

Step1: Use the triangle angle - sum property

The sum of the interior angles of a triangle is \(180^{\circ}\). So, \(x + 38+107=180\).

Step2: Solve for \(x\)

First, simplify the left - hand side of the equation: \(x+(38 + 107)=x + 145\). Then, we have the equation \(x+145 = 180\). Subtract 145 from both sides: \(x=180 - 145\).

Answer:

\(35\)