Question

problems 9 - 10: spiral review
here are three angles that form a straight angle.
write an equation that includes x.
determine the value of x.
54°

Explanation:

Step1: Use the straight - angle property

The sum of angles on a straight line is \(180^{\circ}\). So the equation is \(x + 43+83=180\).

Step2: Solve the equation for \(x\)

First, simplify the left - hand side of the equation: \(x+(43 + 83)=x + 126\). Then, using the equation \(x+126 = 180\), subtract 126 from both sides. \(x=180 - 126\).

Answer:

\(x = 54\)