Question

the measures of the angles of a triangle are shown in the figure belo x. answer attempt 1 out of 2 $x = \square$

Explanation:

Step1: Sum triangle angles to 180°

$74 + 49 + 3x = 180$

Step2: Simplify left side

$123 + 3x = 180$

Step3: Isolate term with $x$

$3x = 180 - 123$
$3x = 57$

Step4: Solve for $x$

$x = \frac{57}{3}$

Answer:

$x = 19$