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OpenStudy (anonymous):
The sum of the four angle measures of any convex quadrilateral is 360 degrees. Suppose that a convex quadrilateral has angle measures of 90, 10y-8, and 4y-4 degrees. Write an expression for the degree measure of the fourth angle.
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OpenStudy (alexandervonhumboldt2):
90+10y-8+4y-4+x=360 x=282-14y
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