An angles measure is 5 degrees less than 3 times the measure of its supplement. Find the measure of the angle and its supplement.

Question

I don't know what it's asking me to do. 

Answer 1

Supplementary angles are angles that add up to 180 degrees.

 

Let an angle = x

Let its supplement = 180 - x

 

 

We can write an equation using the variables and description.

 

x = 3(180 - x) - 5

 

 

Solve for x.

 

x = 540 - 3x - 5

 

x = 535 - 3x

 

 

Add 3x on both sides of equation.

 

4x = 535

 

 

Divide both sides of equation by 4.

 

x = 133.75

 

 

This is your angle.  Now subtract this value from 180 to get your supplement.