Question

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in the figure below, (lparallel m). find (x).

Explanation:

Step1: Find alternate - interior angle

The alternate - interior angle to the $141^{\circ}$ angle is $180 - 141=39^{\circ}$.

Step2: Use angle - sum property of triangle

In the triangle, we know that the sum of interior angles is $180^{\circ}$. So $x = 180-(39 + 48)$.
$x=180 - 87$.

Answer:

$x = 93$