Question

try this video for extra example 2 and 3 - using pr

1. find the value of x.

Explanation:

Step1: Identify supplementary angles

$2x^\circ + 120^\circ = 180^\circ$

Step2: Isolate the variable term

$2x = 180 - 120$

Step3: Simplify and solve for x

$2x = 60$
$x = \frac{60}{2}$

Answer:

$30$