Question 1050729
x be the angle then

{{{180-x=-225+6(90-x)}}}

{{{180-x=-225+(540-6x)}}}

{{{180-x=-225+(540-6x)}}}
{{{180-x=315+(-6x)}}}

{{{180=315+(-5x)}}}

{{{180-315=(-5x)}}}

{{{-135=(-5x)}}}
{{{27=(x)}}}


lets check your self.