Remake of steps to graph a line, if the equation is 2x=4y=8

There were 816 people at a concert when a band started to play. after each song, only half the people stayed to hear the next song. how many people were left at the concert after x songs? write a function to represent this scenario.

What does x = in this equation x+3+2x=x+5

Ateacher noticed 5/8 of the students were wearing either blue shorts or white shorts. write two different ways this could be done.