Question

3 find the value of x in the figure. 57° (x + 23)° x =

Explanation:

Step1: Recall angle - sum property

The sum of adjacent angles on a straight - line is 180°. So, 57°+(x + 23)°=180°.

Step2: Simplify the left - hand side

First, combine like terms: 57+23+x=180, which gives 80 + x=180.

Step3: Solve for x

Subtract 80 from both sides of the equation: x=180 - 80.

Answer:

100