Ineed number 30, i kinda don’t understand so if you could do the steps it would .

That is a linear pair meaning that the 2 equations equal 180°.
when you set up your equation it will look like :

3x+31+2x-6=180

you will then combine the line terms

3x+2x=5x
31-6= 25

now put everything back together

5x+25=180

you have to get "x" by itself. You HAVE to use the opposite sign to bring it over the equal sign.

5x-25=180
-25 -25

5x=155

divide both of the sides by the number that is connected to the variable that you are trying to get by itself (in the case your variable is x)

5x ÷ 5 = x
155÷ 5 = 31

x=31

11 mintues is the naswer