please solve it immideatly
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The sum of the measures of the interior angles of a polygon with n sides is
(n – 2)180
A heptagon has 7 sides. Hence sum of angles of a heptagon is
(7-2)180 = 900
Add up the given values and their sum is 900
x+3+2x+5+x+8+3x+1+5x-6+2x+9+x-5 = 900
15x + 15 = 900
x+1 = 60
x = 59
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