Answer:
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Step-by-step explanation:
You need to find x first in order to find the measure of angle C. To solve for x, we will use the fact that interior angles of a triangle have angle measurements that add up to 180 degrees.
Using this knowledge, we can create an equation where angles A, B, and C add up to equal 180.
Combine like terms on the left side of the equation.
Subtract 6 from both sides of the equation.
Divide both sides of the equation by 3.
Now that you've found the value of x, you can use this value to plug into the expression for angle C.
Therefore, the final answer is: