Please help !!! Urgent !!!What is the value of x???

Answer:
40
Step-by-step explanation:
x + (4x-20) = 180
5x - 20 = 180
5x = 200
x = 40
Answer:
the answer is 40
Step-by-step explanation:
the value of x and 4x -20 will be 180 degrees because it is a line and so you set the sum of those to 180 and solve for x