Question

find the value of x.

Explanation:

Step1: Recall triangle angle sum

The sum of angles in a triangle is $180^\circ$.

Step2: Set up the equation

$x + 70 + 30 = 180$

Step3: Simplify and solve for x

$x + 100 = 180$
$x = 180 - 100$

Answer:

$80$