Question

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+4, and 3y-2 degrees. Write an expression for the degree measure of the fourth angle.

Answer 1

let the fourth angle be x°

x = 360 - (90 + 10y+4 + 3y-2)

Answer 2

Thank you!