Question

answer attempt 1 out of 2
$x =$
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Explanation:

Step1: Recall angle - sum property of a triangle

The sum of the interior angles of a triangle is 180°. So, $(4x + 4)+65 + 79=180$.

Step2: Simplify the left - hand side

$4x+4 + 65+79=4x+(4 + 65+79)=4x + 148$. So, $4x+148 = 180$.

Step3: Isolate the variable term

Subtract 148 from both sides: $4x=180 - 148$. So, $4x=32$.

Step4: Solve for x

Divide both sides by 4: $x=\frac{32}{4}$.

Answer:

$x = 8$