Question 1015731
A angles of quadrilateral = 180 degrees
so (5x-15)+(3x-1)+(5x-15)+(4x+34)= 180
5x+3x+5x+4x-15-1-15+34 = 180
17x+3 = 180
add -3 to each side
17x = 177
divide each side by 17
x = 177/17