Respuesta :

needhelp5877

Answer:

77° is the answer

Step-by-step explanation:

hope it helps;)

Answer:

[tex]T=139[/tex]°

Step-by-step explanation:

First we solve for [tex]x[/tex]

Here is our equation

[tex](21x+13)+(3x-1)+(4x)=180[/tex]

[tex]Combine[/tex] [tex]like[/tex] [tex]terms[/tex]

[tex]28x+12=180[/tex]°

[tex]28x=168[/tex]°

[tex]x=6[/tex]°

[tex]T=21x+13,T=126+13[/tex]

[tex]T=126+13, T=139[/tex]