Question

l value of x.

Explanation:

Step1: Recall angle - sum property

The sum of interior angles of a triangle is 180°. So, $x + 46+78=180$.

Step2: Solve for x

$x=180-(46 + 78)$. First, calculate $46+78 = 124$. Then, $x=180 - 124$. So, $x = 56$.

Answer:

56