The answer for this question is to treat people the way you want to be treated if you want the answer click the link below
Step-by-step explanation:
since all angles add up to 180:
(8x-1)+(3x+4)+(3x+9)=180
add like terms:
14x+12=180
x=12
Hope that helps :)
-1 5/6 + (-1/3) = -1 5/6 - 2/6 = -2 1/6
answer: -2 1/6