find the value of x.\n$x = \\square$

Explanation:

Step1: Find the interior angle adjacent to $x$

First, calculate the missing interior angle of the triangle. The sum of angles in a triangle is $180^\circ$. Let the interior angle be $y$. $y = 180^\circ - 103^\circ - 39^\circ = 38^\circ$

Step2: Calculate $x$ using supplementary angles

$x$ and $y$ are supplementary (they form a straight line, sum to $180^\circ$). $x = 180^\circ - y = 180^\circ - 38^\circ$

Answer:

$142^\circ$