Answer:
291 - 5y
Step-by-step explanation:
x- a measure of the fourth angle
The equation
[tex]x+60+(2y+8)+(3y+1)=360\qquad|\text{combine like terms}\\\\x+(2y+3y)+(60+8+1)=360\\\\x+5y+69=360\qquad|\text{subtract 5y and 69 from both sides}\\\\x=291-5y[/tex]
