Question

find the value of x.

Explanation:

Step1: Recall angle - sum property

The sum of angles on a straight - line is 180°. So, $(5x + 20)+50=180$.

Step2: Simplify the equation

$5x+20 + 50=180$ simplifies to $5x+70 = 180$.

Step3: Isolate the term with x

Subtract 70 from both sides: $5x=180 - 70$, so $5x=110$.

Step4: Solve for x

Divide both sides by 5: $x=\frac{110}{5}=22$.

Answer:

22