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Two angles are supplementary. One is 52° more than three times the other. Find the measures of the angles. Supplementary angles are angles whose sum is 180°.

 

What is the measure of the smaller angle?

 

What is the measure of the larger angle?

ladiikeiii  Nov 16, 2017

Best Answer 

 #1
avatar+7155 
+3

Let's call one of the angles  " a "  and the other angle  " b " .

 

Let     a  =  52° + 3b

 

and since the angles are supplementary,

 

a + b  =  180°          In this equation, substitute  52° + 3b  in for  a .

 

52° + 3b + b  =  180°              Subtract  52°  from both sides of the equation.

 

3b + b  =  180° - 52°               Combine like terms.

 

4b  =  128°                             Divide both sides by  4 .

 

b  =  32°

 

And since   a + b  =  180°  ,   a   =   180° - b   =   180° - 32°   =   148°

 

a  =  148°

hectictar  Nov 16, 2017
 #1
avatar+7155 
+3
Best Answer

Let's call one of the angles  " a "  and the other angle  " b " .

 

Let     a  =  52° + 3b

 

and since the angles are supplementary,

 

a + b  =  180°          In this equation, substitute  52° + 3b  in for  a .

 

52° + 3b + b  =  180°              Subtract  52°  from both sides of the equation.

 

3b + b  =  180° - 52°               Combine like terms.

 

4b  =  128°                             Divide both sides by  4 .

 

b  =  32°

 

And since   a + b  =  180°  ,   a   =   180° - b   =   180° - 32°   =   148°

 

a  =  148°

hectictar  Nov 16, 2017

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